10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2019

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ____ to _____

Commission File Number: 000-53131

CHINA XD PLASTICS COMPANY LIMITED

(Exact name of registrant as specified in its charter)

Nevada	04-3836208
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

No. 9 Dalian North Road, Haping Road Centralized Industrial Park,

Harbin Development Zone, Heilongjiang Province, PRC 150060

(Address of principal executive offices) (Zip Code)

86-451-8434-6600

(Registrant's telephone number, including area code)

 Not applicable

(Former name, former address and former fiscal year, if changed since last report)

Indicate by check whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days: Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically, if any, every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☐	Accelerated filer ☐
Non-accelerated filer ☐ (Do not check if a smaller reporting company)	Smaller reporting company ☒
Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

As of November 8, 2019, the registrant had 66,948,841  shares of common stock, par value US$0.0001 per share, outstanding.

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.0001 per share	CXDC	NASDAQ Global Market

TABLE OF CONTENTS

		PAGE
PART I. FINANCIAL INFORMATION		3
Item 1. Financial Statements		3
	Unaudited Condensed Consolidated Balance Sheets	3
	Unaudited Condensed Consolidated Statements of Comprehensive Income	4
	Unaudited Condensed Consolidated Statements of Cash Flows	5
	Notes to the Unaudited Condensed Consolidated Financial Statements	6
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations		27
Item 3. Quantitative and Qualitative Disclosures About Market Risk		42
Item 4. Controls and Procedures		43
PART II. OTHER INFORMATION		43
Item 1. Legal Proceedings		43
Item 1A. Risk Factors		43
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds		43
Item 3. Defaults Upon Senior Securities		43
Item 4. Mine Safety Disclosures		44
Item 5.  Other Information		44
Item 6.  Exhibits		44
Signatures		46

2 

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

CHINA XD PLASTICS COMPANY LIMITED AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS

	September 30,			December 31,
	2019			2018
	US$			US$
ASSETS
Current assets:
Cash and cash equivalents		10,509,402			41,301,817
Restricted cash		224,647,340			325,690,023
Accounts receivable, net of allowance for doubtful accounts		326,831,373			294,688,288
Inventories		699,002,558			620,033,195
Prepaid expenses and other current assets		234,507,419			132,218,528
Total current assets		1,495,498,092			1,413,931,851
Property, plant and equipment, net		798,105,488			775,941,280
Land use rights, net		28,465,372			29,796,795
Long-term prepayments to equipment and construction suppliers		436,326,962			530,636,319
Operating lease right-of-use assets, net		15,601,773			—
Other non-current assets		801,296			3,212,986
Total assets		2,774,798,983			2,753,519,231
LIABILITIES, REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY
Current liabilities:
Short-term bank loans, including current portion of long-term bank loans		619,522,749			729,666,920
Bills payable		431,288,254			618,166,453
Accounts payable		205,440,261			84,958,469
Amounts due to related parties		28,444,767			18,365,738
Income taxes payable		21,105,696			15,975,367
Operating lease liabilities, current		1,390,531			—
Accrued expenses and other current liabilities		98,503,263			126,926,898
Total current liabilities		1,405,695,521			1,594,059,845
Long-term bank loans, excluding current portion		276,518,446			111,808,244
Deferred income		93,214,165			99,583,477
Operating lease liabilities, non-current		14,513,462			—
Other non-current liabilities		95,038,794			101,573,772
Total liabilities		1,884,980,388			1,907,025,338
Redeemable Series D convertible preferred stock (redemption amount of nil and US$280,650,800 as of September 30, 2019 and December 31, 2018, respectively)		—			97,576,465
Stockholders' equity:
Series B preferred stock		100			100
Common stock, US$0.0001 par value, 500,000,000 shares authorized, 66,969,841 and 50,969,841 shares issued, 66,948,841 and 50,948,841 shares outstanding as of September 30, 2019 and December 31, 2018, respectively		6,697			5,097
Treasury stock, 21,000 shares at cost		(92,694	)		(92,694	)
Additional paid-in capital		184,208,447			86,633,582
Retained earnings		785,161,135			717,103,890
Accumulated other comprehensive loss		(79,465,090	)		(54,732,547	)
Total stockholders' equity		889,818,595			748,917,428
Commitments and contingencies		—			—
Total liabilities, redeemable convertible preferred stock and stockholders' equity		2,774,798,983			2,753,519,231

See accompanying notes to unaudited condensed consolidated financial statements.

3 

CHINA XD PLASTICS COMPANY LIMITED AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	Three-Month Period Ended September 30,						Nine-Month Period Ended September 30,
	2019			2018			2019			2018
	US$			US$			US$			US$
Revenues		373,159,091			297,224,740			1,137,698,978			925,007,293
Cost of revenues		(313,044,518	)		(249,997,804	)		(961,994,051	)		(767,759,035	)
Gross profit		60,114,573			47,226,936			175,704,927			157,248,258
Selling expenses		(431,070	)		(2,741,156	)		(956,300	)		(7,354,876	)
General and administrative expenses		(5,999,123	)		(8,117,769	)		(20,539,101	)		(28,341,545	)
Research and development expenses		(19,908,789	)		(23,342,321	)		(39,522,696	)		(33,680,855	)
Total operating expenses		(26,338,982	)		(34,201,246	)		(61,018,097	)		(69,377,276	)
Operating income		33,775,591			13,025,690			114,686,830			87,870,982
Interest income		338,033			264,838			1,228,169			3,607,136
Interest expense		(17,036,345	)		(13,393,886	)		(46,595,864	)		(37,562,666	)
Foreign currency exchange gains		4,065,890			4,387,166			4,975,637			6,064,328
Losses on foreign currency option contracts		—			—			—			(520,981	)
Gains on disposal of a subsidiary		—			—			518,491
Government grant		1,405,284			1,145,703			5,111,437			4,001,746
Total non-operating expense, net		(11,227,138	)		(7,596,179	)		(34,762,130	)		(24,410,437	)
Income before income taxes		22,548,453			5,429,511			79,924,700			63,460,545
Income tax benefit (expense)		(5,583,240	)		3,535,430			(11,867,455	)		(8,171,625	)
Net income		16,965,213			8,964,941			68,057,245			55,288,920
Earnings per common share:
Basic and diluted		0.25			0.13			1.02			0.83
Net Income		16,965,213			8,964,941			68,057,245			55,288,920
Other comprehensive losses
Foreign currency translation adjustment, net of nil income taxes		(22,690,259	)		(28,497,101	)		(24,732,543	)		(38,141,701	)
Total Comprehensive income (losses)		(5,725,046	)		(19,532,160	)		43,324,702			17,147,219

See accompanying notes to unaudited condensed consolidated financial statements.

4 

CHINA XD PLASTICS COMPANY LIMITED AND SUBSIDIARIES

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

	Nine-Month Period Ended September 30,
	2019			2018
	US$			US$
Cash flows from operating activities:
Net cash (used in) provided by operating activities		(183,155,418	)		115,513,922
Cash flows from investing activities:
Purchase of and deposits for property, plant and equipment		(54,255,192	)		(430,839,423	)
Refund of prepayment for building purchase		15,810,261			—
Net proceeds from sales of a subsidiary		7,296,921			—
Proceeds from maturity of time deposits		—			517,686,072
Purchase of time deposits		—			(236,428,396	)
Refund of deposit from equipment suppliers		—			121,464,390
Deposits for acquisition of equity		—			(3,640,688	)
Refund of deposits for acquisition of equity		—			15,577,880
Government grant related to the construction of Sichuan plant		—			10,324,859
Net cash used in investing activities		(31,148,010	)		(5,855,306	)
Cash flows from financing activities:
Proceeds from bank borrowings		1,647,171,688			719,994,473
Repayments of bank borrowings		(1,569,203,033	)		(757,018,030	)
Proceeds from interest-free advances from related parties		79,969,718			14,256,429
Repayments of interest-free advances from related parties		(68,543,743	)		—
Investment received in advance from a related party		—			75,567,512
Refund of investment received in advance from a related party		—			(75,567,512	)
Net cash provided by (used in) financing activities		89,394,630			(22,767,128	)
Effect of foreign currency exchange rate changes on cash, cash equivalents and restricted cash		(6,926,300	)		(19,528,082	)
Net (decrease) increase in cash, cash equivalents and restricted cash		(131,835,098	)		67,363,406
Cash, cash equivalents and restricted cash at beginning of period		366,991,840			320,091,665
Cash, cash equivalents and restricted cash at end of period		235,156,742			387,455,071
Supplemental disclosure of cash flow information:
Interest paid, net of capitalized interest		46,534,262			35,067,228
Income taxes paid		7,951,724			16,866,842
Non-cash investing activities:
Accrual for purchase of equipment and construction included in accrued expenses and other current liabilities		1,794,800			5,825,800
Non-cash financing activities:
Conversion of Series D preferred stock to common stock		97,576,465			—

The following table shows a reconciliation of cash, cash equivalents and restricted cash on the condensed consolidated balance sheets to that presented in the above condensed consolidated statements of cash flows.

	September 30,
	2019		2018
	US$		US$
Cash and cash equivalents		10,509,402		51,539,593
Restricted cash		224,647,340		335,915,478
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows		235,156,742		387,455,071

See accompanying notes to unaudited condensed consolidated financial statements.

5 

CHINA XD PLASTICS COMPANY LIMITED AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Note 1 - Basis of presentation, significant concentrations and risks

(a) Basis of presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted as permitted by rules and regulations of the United States Securities and Exchange Commission ("SEC"). The condensed consolidated balance sheet as of December 31, 2018 was derived from the audited consolidated financial statements of China XD Plastics Company Limited ("China XD") and subsidiaries (collectively, the "Company"). The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated balance sheet of the Company as of December 31, 2018, and the related consolidated statements of comprehensive income, changes in equity and cash flows for the year then ended, included in the Company's Annual Report on Form 10-K filed with the SEC on April 15, 2019.

In the opinion of the management, all adjustments (which include normal recurring adjustments) necessary to present a fair statement of the financial position as of September 30, 2019, the results of operations and cash flows for the nine-month periods ended September 30, 2019 and 2018, have been made.

The preparation of condensed consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include the recoverability of the carrying amounts of property, plant and equipment, the realizability of inventories, the useful lives of property, plant and equipment, the collectability of accounts receivable, the fair values of stock-based compensation awards, the accruals for tax uncertainties and other contingencies, and the discount rate used to determine the present value of the lease payments. The current economic environment has increased the degree of uncertainty inherent in those estimates and assumptions.

(b) Accounting pronouncement adopted in 2019

In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842) ("ASU 2016-02"). The new guidance requires the recognition of lease assets and liabilities for operating leases with terms of more than 12 months, in addition to those currently recorded, on the Company’s consolidated balance sheets. Presentation of leases within the consolidated statements of comprehensive income and consolidated statements of cash flows will be generally consistent with the current lease accounting guidance. The Company has adopted this ASU on January 1, 2019 using a modified retrospective approach by recognizing a cumulative-effect adjustment to the opening balance of retained earnings. This adoption approach resulted in a balance sheet presentation that was not be comparable to the prior period in the first year of adoption. Additionally, the Company used the package of practical expedients that allowed the Company to not reassess: (1) whether any expired or existing contracts are or contain leases, (2) lease classification for any expired or existing leases and (3) initial direct costs for any expired or existing leases. The Company also elected the hindsight practical expedient to determine the reasonably certain lease term for existing leases. The adoption of the standard resulted in recognition of right-of-use (“ROU”) assets and lease liabilities of approximately US$16.1 million and US$16.8 million, respectively, as of January 1, 2019. The difference between the initial operating right-of-use asset and operating lease liability of US$0.7 million was accrued rent previously recognized under ASC 840. There was no cumulative effect on retained earnings as of January 1, 2019 as a result of adoption.

6 

In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (“ASU 2018-02”). The new guidance allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act and will improve the usefulness of information reported to financial statement users. The Company has adopted the standard on January 1, 2019, and there was no material impact on its consolidated financial statements as a result of the adoption.

In June 2018, the FASB issued ASU No. 2018-07, Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting (“ASU 2018-07”). The new guidance largely aligns the accounting for share-based awards issued to employees and nonemployees. Existing guidance for employee awards will apply to non-employee share-based transactions with limited exceptions. The new guidance also clarifies that any share based payment awards issued to customers should be evaluated under ASC 606, Revenue from Contracts with Customers. The Company has adopted the standard on January 1, 2019, and there was no material impact on its consolidated financial statements as a result of the adoption.

(c) Significant concentrations and risks

Sales concentration

The Company sells its products primarily through approved distributors in the People's Republic of China (the "PRC"). The Company's sales are highly concentrated. Sales to distributors individually exceeded 10% of the Company's revenues for the three-month and nine-month periods ended September 30, 2019 and 2018, are as follows:

	Three-Month Period Ended September 30,
	2019					2018
	US$		%			US$		%
Distributor A, located in PRC		48,354,258		13.0	%		43,675,493		14.8	%
Distributor B, located in PRC		41,236,907		11.1	%		38,087,744		12.8	%
Distributor C, located in PRC		31,224,911		8.4	%		34,620,819		11.6	%
Total		120,816,076		32.5	%		116,384,056		39.2	%

	Nine-Month Period Ended September 30,
	2019					2018
	US$		%			US$		%
Distributor A, located in PRC		163,355,649		14.4	%		136,172,680		14.7	%
Distributor B, located in PRC		115,842,572		10.2	%		114,870,175		12.4	%
Distributor C, located in PRC		86,271,299		7.6	%		105,340,424		11.4	%
Total		365,469,520		32.2	%		356,383,279		38.5	%

The Company expects revenues from these distributors to continue to represent a substantial portion of its revenue in the future. Any factor adversely affecting the automobile industry in the PRC or the business operations of these customers will have a material effect on the Company's business, financial position and results of operations.

Purchase concentration of raw materials and equipment

The principal raw materials used for the Company's production of modified plastics products are plastic resins, such as polypropylene, ABS and nylon. The Company purchases substantially all of its raw materials through a limited number of distributors.  Raw material purchases from these distributors, which individually exceeded 10% of the Company's total raw material purchases, accounted for approximately 31.6% (three distributors) and 43.2% (four distributors) for the three-month periods ended September 30, 2019 and 2018, respectively, and 32.6% (three distributors) and 20.4% (two distributors) of the Company's total raw materials purchases for the nine-month periods ended September 30, 2019 and 2018, respectively. Management believes that other suppliers could provide similar raw materials on comparable terms. A change in suppliers, however, could cause a delay in manufacturing and a possible loss of sales, which would adversely affect the Company's business, financial position and results of operations.

7 

Cash concentration

Cash and cash equivalents and short-term restricted cash mentioned below maintained at banks consist of the following:

	September 30, 2019		December 31, 2018
		US$		US$
Renminbi (“RMB”) denominated bank deposits with:
Financial Institutions in the PRC		235,011,468		366,773,172
Financial Institutions in Hong Kong Special Administrative Region ("Hong Kong SAR")		—		8,134
United States (“U.S.”) dollar denominated bank deposits with:
Financial Institution in the U.S.		16,730		40,390
Financial Institutions in the PRC		16,930		17,050
Financial Institution in Hong Kong SAR		78,930		131,892
Financial Institution in Macau Special Administrative Region ("Macau SAR")		910		6,144
Financial Institution in Dubai, UAE		3,518		14,464
Hong Kong dollar denominated bank deposits with:
Financial institution in Hong Kong SAR		8,290		156
Dirham denominated bank deposits with:
Financial institution in Dubai, UAE		19,966		438

The bank deposits with financial institutions in the PRC are insured by the government authority for up to RMB500,000. The bank deposits with financial institutions in the Hong Kong SAR are insured by the government authority for up to HK$500,000. The bank deposits with financial institutions in the Macau SAR are insured by the government authority for up to MOP$500,000. The bank deposits with financial institutions in the Dubai, UAE are not insured by the government authority. Total bank deposits amounting to US$1,372,734 and US$1,442,481 were insured as of September 30, 2019 and December 31, 2018, respectively. The Company has not experienced any losses in uninsured bank deposits and does not believe that it is exposed to any significant risks on cash held in bank accounts. To limit exposure to credit risk, the Company primarily places bank deposits with large financial institutions in the PRC, Hong Kong SAR, Macau SAR and Dubai, UAE with acceptable credit rating.

Cash deposits in bank that are restricted as to withdrawal or usage for up to 12 months are reported as restricted cash in the consolidated balance sheets.

Short-term bank deposits that are pledged as collateral for bills payable relating to purchases of raw materials are reported as restricted cash and amounted to US$129,879,525 and US$202,568,664 as of September 30, 2019 and December 31, 2018, respectively. Upon maturity and repayment of the bills payable, which is generally within 6 months, the cash becomes available for use by the Company.

Short-term bank deposits that are related to government grant are reported as restricted cash and amounted to US$1,430,537 and US$1,469,935 as of September 30, 2019 and December 31, 2018, respectively. 

Short-term bank deposits that are pledged as collateral for issuance of letter of guarantee are reported as restricted cash amounted to US$42,575,237 and US$70,885,301 as of September 30, 2019 and December 31, 2018, respectively.

Short-term bank deposits that are pledged as repayment to settle US$45.0 million of syndicated loans obtained from Standard Chartered Bank are reported as restricted cash and amounted to US$49,348,194 and US$50,766,123 as of September 30, 2019 and December 31, 2018, respectively.

Short-term bank deposits that are pledged as collateral to settle US$14.9 million of short-term bank loans obtained from Postal Savings Bank of China are reported as restricted cash and amounted to US$1,413,847 and nil as of September 30, 2019 and December 31, 2018, respectively.

8 

Note 2 – Accounts receivable

Accounts receivable consists of the following:

	September 30, 2019			December 31, 2018
		US$			US$
Accounts receivable		326,868,747			294,726,804
Allowance for doubtful accounts		(37,374	)		(38,516	)
Accounts receivable, net		326,831,373			294,688,288

As of September 30, 2019 and December 31, 2018, the accounts receivable balances also include notes receivable in the amount of US$335,142 and US$27,392, respectively. As of September 30, 2019 and December 31, 2018, US$37,431,712 and US$94,581,170, respectively, of accounts receivable are pledged for the short-term bank loans. 

There was no accrual of additional provision or write-off of accounts receivable for the three-month and nine-month periods ended September 30, 2019 and 2018.

The following table provides an analysis of the aging of accounts receivable as of September 30, 2019 and December 31, 2018:

	September 30, 2019		December 31, 2018
		US$		US$
Aging:
– current		270,927,987		218,458,862
– 1-3 months past due		34,349,372		31,386,341
– 4-6 months past due		5,753,489		109,412
– 7-12 months past due		15,124,228		42,532,170
– greater than one year past due		713,671		2,240,019
Total accounts receivable		326,868,747		294,726,804

Note 3 – Inventories

Inventories consist of the following:

		September 30, 2019			December 31, 2018
	US$			US$
Raw materials and work in progress			690,531,879			612,701,274
Finished goods			8,470,679			7,331,921
Total inventories			699,002,558			620,033,195

There were no write down of inventories for the three-month and nine-month periods ended September 30, 2019 and 2018.

9 

Note 4 – Prepaid expenses and other current assets

Prepaid expenses and other current assets consist of the following:

	September 30, 2019		December 31, 2018
	US$		US$
Value added taxes receivables (i)		1,911,502		4,700,702
Advances to suppliers (ii)		131,089,782		104,469,023
Interest receivable (iii)		939,962		826,729
Consideration for sales of Shanghai Sales (iv)		-		7,285,231
Receivables from Hong Kong Grand Royal Trading Co., Ltd.(v)		42,566,949		-
Receivables from Harbin Xinda High-Tech Co., Ltd. (vi)		50,096,218		-
Others (vii)		7,903,006		14,936,843
Total prepaid expenses and other current assets		234,507,419		132,218,528

(i) Value added taxes receivables mainly represent the input taxes on purchasing equipment by Heilongjiang Xinda Enterprise Group Company Limited (“HLJ Xinda Group”) and Sichuan Xinda Enterprise Group Company Limited (“Sichuan Xinda”), which are to be net off with output taxes. Value added taxes receivables were recognized in operating activities in consolidated statements of cash flows.

(ii) Advances to suppliers are the advances to purchase raw materials.

(iii) Interest receivable mainly represents interest income accrued from restricted cash.

(iv) On December 18, 2018, HLJ Xinda Group entered into an agreement with Mr. Xiaohui Gao, General Manager of Heilongjiang Xinda Enterprise Group Shanghai New Materials Sales Company Limited (“Shanghai Sales”), to transfer Shanghai Sales from HLJ Xinda Group to Mr. Gao for a total consideration of RMB50.0 million (equivalent to US$7.3 million). Pursuant to the contract, the Company completed the legal transfer on December 19, 2018 and the full consideration of US$7.3 million was received on April 11, 2019. The cash received was included in the cash flows from investing activities for the nine-month period ended September 30, 2019.

(v) Hong Kong Grand Royal Trading Co., Ltd. (“Hong Kong Grand Royal”) is a raw material supplier of Dubai Xinda. Dubai Xinda has prepaid US$48.2 million to Hong Kong Grand Royal in 2017 for purchase of raw materials. Due to the price fluctuation of raw materials, Hong Kong Grand Royal could not purchase and deliver the raw materials to Dubai Xinda. In July 2019, both parties entered into a supplemental agreement to cancel the original purchase agreements and Hong Kong Grand Royal shall refund US$14.0 million by September 30, 2019 and US$34.2 million by October 30, 2019. As of September 30, 2019, Hong Kong Grand Royal has refunded US$5.6 million. On October 25, 2019, both parties entered into another supplemental agreement, pursuant to which, the remaining refund shall be paid by December 30, 2019.

(vi) During the nine-month period ended September 30, 2019, the Company transferred US$50.1 million to Harbin Xinda High-Tech Co., Ltd. The amount was subsequently settled in November 2019.

(vii) Others mainly include prepaid miscellaneous service fee and staff advance.

Note 5 – Property, plant and equipment, net

Property, plant and equipment consist of the following:

	September 30, 2019			December 31, 2018
		US$			US$
Machinery, equipment and furniture		570,806,401			580,735,482
Motor vehicles		2,270,465			2,658,487
Workshops and buildings		154,524,398			157,976,839
Construction in progress		292,003,986			217,194,285
Total property, plant and equipment		1,019,605,250			958,565,093
Less accumulated depreciation		(221,499,762	)		(182,623,813	)
Property, plant and equipment, net		798,105,488			775,941,280

10 

For the three-month and nine-month periods ended September 30, 2019 and 2018, the Company capitalized US$1,581,827 and US$568,444, and US$2,326,326 and US$1,829,388 of interest costs as a component of the cost of construction in progress. Depreciation expense on property, plant and equipment was allocated to the following expense items:

	Three-Month Period Ended September 30,
	2019		2018
	US$		US$
Cost of revenues		13,251,745		9,219,288
General and administrative expenses		524,249		804,011
Research and development expenses		887,462		978,117
Selling expenses		1,107		1,332
Total depreciation expense		14,664,563		11,002,748

	Nine-Month Period Ended September 30,
	2019		2018
	US$		US$
Cost of revenues		40,232,815		28,098,227
General and administrative expenses		1,730,020		2,405,381
Research and development expenses		2,855,749		2,954,445
Selling expenses		3,384		4,162
Total depreciation expense		44,821,968		33,462,215

Note 6 - Prepayments to equipment and construction suppliers

	September 30, 2019		December 31, 2018
		US$		US$
Hailezi (i)		412,405,158		502,087,116
Green River (ii)		—		15,778,057
Beijin Construction (iii)		6,670,735		6,867,269
Peaceful Treasure Limited(iv)		16,860,609		4,936,983
Others		390,460		966,894
Total Prepayments to equipment and construction suppliers		436,326,962		530,636,319

(i) On September 26, 2016 and February 28, 2017, HLJ Xinda Group entered into equipment purchase contracts with Hailezi for a total consideration of RMB782.2 million (equivalent to US$110.6 million) to purchase storage facility and other equipment, which will be used for upgrading the storage system of warehouse located in Harbin, China. Pursuant to the contract with Hailezi, HLJ Xinda Group prepaid RMB621.6 million (equivalent to US$87.9 million) during the first quarter of 2017.  Due to a redesign of outdoor storage facility in June 2017, HLJ Xinda Group entered into a supplementary agreement with Hailezi, which decreased the original contract amount to RMB283.7 million (equivalent to US$40.1 million). Hailezi refunded RMB369.1 million (equivalent to US$52.2 million) to HLJ Xinda Group on June 22, 2017. In May 2019, HLJ Xinda Group has prepaid another RMB1.0 million (equivalent to US$0.1 million). As of September 30, 2019, HLJ Xinda Group has prepaid RMB253.5 million (equivalent to US$35.8 million). 

11 

On July 21, 2017, HLJ Xinda Group entered into three investment agreements with the Management Committee of Harbin Economic- Technological Development Zone with respect to the industrial project for 300,000 metric tons of biological composite materials, the industrial project for upgrading existing equipment for 100,000 metric tons of engineering plastics and the industrial project for a 3D printing intelligent manufacture demonstration factory and a 3D printing display and experience cloud factory (the "HLJ Project"). In order to fulfill the agreements, HLJ Xinda Group entered into an equipment purchase contract with Hailezi to purchase production equipment in November 2017, which will be used for 100,000 metric tons of engineering plastics located in Harbin, for a consideration of RMB939.7 million (equivalent to US$132.9million). Pursuant to the contract with Hailezi, HLJ Xinda Group has prepaid RMB920.9 million (equivalent to US$130.2 million) in total as of June 30, 2019. RMB530.8 million (equivalent to US$75.0 million) of the equipment was delivered in June 2019 and the prepayment was transferred to construction in progress. As of September 30, 2019, the amount of the remaining prepayment was RMB390.1 million (equivalent to US$55.2 million).

In connection with the HLJ project, in June and July 2018, HLJ Xinda Group entered into two equipment purchase contracts with Hailezi to purchase production equipment, which will be used for 300,000 metric tons of biological based composite material, located in Harbin, for a consideration of RMB1,906.8 million (equivalent to US$269.6 million). Pursuant to the contracts with Hailezi, HLJ Xinda Group has prepaid RMB541.5 million (equivalent to US$76.6 million) as of September 30, 2019.

On March 17, 2017, Sichuan Xinda entered into a definitive agreement with the People's Government of Shunqing District, Nanchong City of Sichuan Province for the production of 300,000 metric tons of bio-composite materials and additive manufacturing and 20,000 metric tons of functional masterbatch, a high-end color additive process in plastics manufacturing (the "Nanchong Project"). The Nanchong Project will be located in a land area of 250 mu (equivalent to 41.2 acres), with 215 mu designated for bio-composite materials and additive manufacturing production and 35 mu to be designated for functional masterbatch production. The projected total capital expenditures for the project is approximately RMB2.5 billion (equivalent to US$353.5 million).

In connection with the Nanchong Project, Sichuan Xinda entered into equipment purchase contracts with Hailezi to purchase production equipment and testing equipment. Pursuant to the contracts with Hailezi, Sichuan Xinda prepaid RMB1,728.9 million (equivalent to US$244.4 million) in the first quarter of year 2017. In 2017, in order to ensure the traceability of the product and management of supply chain, Sichuan Xinda expected to launch an integrated ERP system, which resulted in the equipment to be purchased under the original contracts with Hailezi not meeting the production requirements. Hailezi agreed to refund the prepayment in the amount of RMB1,704.9 million (equivalent to US$241.0 million) by the end of March 2018, the remaining uncancelled amount is RMB24.0 million (equivalent to US$3.4 million). As of December 31, 2017, Sichuan Xinda signed a supplementary agreement with Hailezi, pursuant to the agreement, Sichuan Xinda agreed to pay RMB12.4 million (equivalent to US$1.8 million) to Hailezi for the compensation of Hailezi due to the termination of the purchase contracts. In January 2018, Hailezi refunded the above-mentioned prepayment. The Company received the testing equipment in the amount of RMB3.2 million (equivalent to US$0.5 million) in November 2018, the remaining balance of the uncancelled prepayment as of September 30, 2019 was RMB20.8 million (equivalent to US$3.0 million).

In connection with the Nanchong Project, on June 21, 2018, Sichuan Xinda entered into another equipment purchase contract with Hailezi to purchase production equipment and testing equipment for a consideration of RMB1,900.1 million (equivalent to US$268.7 million). Pursuant to the contracts with Hailezi, Sichuan Xinda has prepaid RMB1,710.1 million (equivalent to US$241.8 million) as of September 30, 2019.

12 

The table below summarized the balance of prepayments to Hailezi for each of the projects as of September 30, 2019 and December 31, 2018, and the movements of the prepayments:

(in millions US$)
Year		Projects	Balance as of December 31, 2018		Prepaid in 2019		Transfer to CIP in 2019			Effect of foreign currency exchange rate changes			Balance as of September 30, 2019
	2017	Storage system		36.8		0.1		—			(1.1	)		35.8
	2017	HLJ project		134.2		—		(75.0	)		(4.0	)		55.2
	2018	HLJ project		78.9		—		—			(2.3	)		76.6
	2017	Nanchong project		3.0		—		—			—			3.0
	2018	Nanchong project		249.2		—		—			(7.4	)		241.8
	Total			502.1		0.1		(75.0	)		(14.8	)		412.4

(ii) In December 2017, HLJ Xinda Group entered into a building purchase contract with Shanghai Caohejing Kangqiao Science & Green River Construction & Development Co., Ltd. for a total consideration of RMB216.6 million (equivalent to US$31.6 million), with a total area of 13,972.64 square meters with a prepaid RMB108.3 million (equivalent to US$15.8 million).

During the six-month period ended June 30, 2019, HLJ Xinda Group entered into an agreement with Green River and Shanghai Sales, to transfer the rights and obligations of HLJ Xinda Group under the original purchase agreement to Shanghai Sales. Pursuant to the agreement, Shanghai Sales shall pay the RMB108.3 million (equivalent to US$15.8 million) to HLJ Xinda Group. As a result, the prepayment was reclassified as prepaid expenses and other current assets during the six-month period ended June 30, 2019. HLJ Xinda Group received the RMB108.3 million on August 6, 2019, which was included in the cash flows from investing activities for the nine-month period ended September 30, 2019.

(iii) Since November 15, 2016, Sichuan Xinda entered into decoration contracts with Sichuan Beijin Construction Engineering Company Limited ("Beijin Construction") to perform indoor and outdoor decoration work for a consideration of RMB264.3 million (equivalent to US$37.4 million). Pursuant to the contracts with Beijin Construction, Sichuan Xinda has prepaid RMB120.9 million (equivalent to US$17.1 million) as of September 30, 2019, of which RMB74.0 million (equivalent to US$10.4 million) was transferred to construction in progress.

(iv) On October 20, 2016, Sichuan Xinda entered into an equipment purchase contract with Peaceful Treasure Limited ("Peaceful") for a total consideration of RMB89.8 million (equivalent to US$12.7 million) to purchase certain production and testing equipment. The Company prepaid RMB33.9 million (equivalent to US$4.8 million) as of September 30, 2019.

On May 31, 2019, Dubai Xinda entered into an equipment purchase contract with Peaceful for a total consideration of US$18.8 million to purchase storage and testing equipment. The Company prepaid US$12.1 million as of September 30, 2019.

Note 7 – Losses on foreign currency option contracts

On February 24, 2017, the Company entered into two foreign currency option contracts with Bank of China ("BOC"), Harbin Branch, pursuant to which the Company and BOC both have options to excise the foreign currency contracts depending on the future currency fluctuation, and the nominal values are US$5.0 million and US$10.0 million, respectively, with the defined exchange rates for settlement on March 15, 2018. The Company recognized losses on the above foreign currency option contracts amounting to US$0.5 million in the nine-month period ended September 30, 2018.

13 

Note 8 – Borrowings

The Company has credit facilities with several banks under which they draw short-term and long-term bank loans as described below.

(a)  Current

	September 30,		December 31,
	2019		2018
		US$		US$
Unsecured loans		310,183,942		418,198,508
Loans secured by accounts receivable		63,623,125		65,567,082
Loans secured by restricted cash		59,138,472		69,500,000
Current portion of long-term bank loans (note b)		186,577,210		176,401,330
Total short-term loans, including current portion of long-term bank loans		619,522,749		729,666,920

As of September 30, 2019 and December 31, 2018, the Company's short-term bank loans (including the current portion of long-term bank loans) bear a weighted average interest rate of 4.8% and 4.7% per annum, respectively. All short-term bank loans mature at various times within one year and contain no renewal terms. 

During the nine-month period ended September 30, 2019, the Company repaid thirteen loans in a total amount of RMB450.0 million (equivalent to US$63.6 million), and obtained thirteen loans in a total amount of RMB450.0 million (equivalent to US$63.6 million) at an annual interest rate of 4.350% secured by accounts receivables of RMB264.8 million (equivalent to US$37.4 million). 

In July 2017, the Company obtained a one-year secured loan of US$14.0 million from Bank of China (Paris Branch) at an annual interest rate of 2.5%. The loan was secured by restricted cash of RMB107.0 million (equivalent to US$15.6 million) in Bank of China in Harbin, China. In accordance with the renewal agreement on July 19, 2018, the repayment term of the loan was extended and the loan was repaid in April 2019. 

In October 2017, the Company obtained a one-year secured loan of US$5.0 million from Bank of China (Paris Branch) at an annual interest rate of 2.5%. The loan was secured by restricted cash of RMB37.5 million (equivalent to US$5.5 million) in Bank of China in Harbin, China. In accordance with the renewal agreement on July 19, 2018, the repayment term of the loan was extended and the loan was repaid in April 2019. 

In October 2017, the Company obtained a one-year secured loan of US$5.5 million from Bank of China (Paris Branch) at an annual interest rate of 2.5%. The loan was secured by restricted cash of RMB42.0 million (equivalent to US$6.1 million) in Bank of China in Harbin, China. In accordance with the renewal agreement on July 19, 2018, the repayment term of the loan was extended and the loan was repaid in April 2019. 

In May 2018, the Company obtained a three-month secured short-term loan of US$45.0 million from Standard Chartered Bank with the interest rate at 1.5% per annum over LIBOR payable on the last day of its interest period. The loan was secured by restricted cash of RMB300.0 million (equivalent to US$42.6 million) in Standard Chartered Bank in Harbin, China. The Company did not repay the loan on time which is due on August 17, 2018 due to the stricter foreign exchange control in the PRC. In accordance with the renewal agreements dated October 30, 2019, the repayment term of the loan was extended and the loan will be due on November 29, 2019. The loan will be repaid when the Company receive the US$135.0 million loan from the consortium of banks and financial institutions led by Industrial and Commercial Bank of China (Macau) Limited pursuant to the facility agreement dated October 2, 2019, details please refer to Note 22. 

In January 2019, the Company obtained a nine-month secured short-term loan of RMB100.0 million (equivalent to US$14.1 million) from Postal Savings Bank of China at an annual interest rate of 4.35%. The loan was secured by restricted cash of RMB10.0 million (equivalent to US$1.4 million) in Postal Savings Bank of China.

(b) Non-current

	September 30, 2019			December 31, 2018
		US$			US$
Secured loans		72,652,556			2,177,985
Unsecured loans		300,443,100			196,031,589
Syndicate loan facility		90,000,000			90,000,000
Less: current portion		(186,577,210	)		(176,401,330	)
Total long-term bank loans, excluding current portion		276,518,446			111,808,244

In October and November 2015, the Company obtained three long term unsecured loans of RMB260.0 million (equivalent to US$36.8 million) from Bank of China at an annual interest rate of 4.75%. In January 2016, the Company obtained a long term unsecured loan of RMB80.0 million (equivalent to US$11.3 million) from Bank of China at an annual interest rate of 4.75%. On December 9, 2016, the Company obtained a long term unsecured loan of RMB30.0 million (equivalent to US$4.2 million) from Bank of China at an annual interest rate of 4.75%. On March 23, 2017, the Company obtained a long term unsecured loan of RMB25.0 million (equivalent to US$3.5 million) from Bank of China at an annual interest rate of 4.75%. The Company repaid RMB175.0 million (equivalent to US$24.7 million) during 2017 and 2018, and RMB25.0 million (equivalent to US$3.5 million) on April 28, 2019. RMB100.0 million (equivalent to US$14.1 million), RMB20.0 million (equivalent to US$2.8 million), and RMB75.0 million (equivalent to US$10.6 million) will be repaid on October 28, 2019, April 28, 2020 and October 28, 2020, respectively. As of September 30, 2019, the Company was providing external guarantees without the bank’s consent, which was in violation of a provision of the loan contract. According to the loan contract, Bank of China has the right to declare the above loans be immediately due and payable. As a result, the loan amounting to RMB75.0 million (equivalent to US$10.6 million) due on October 28, 2020 was callable and classified as short-term loans. For details of the guarantee, please refer to note 18.

14 

On August 22, 2016, Xinda Holding (HK) Company Limited ("Xinda Holding (HK)") a wholly owned subsidiary of the Company, entered into a facility agreement for a loan facility in an aggregate amount of US$180.0 million with a consortium of banks and financial institutions led by Standard Chartered Bank (Hong Kong) Limited. The Company repaid US$90.0 million in 2017 and 2018. US$90.0 million of the principal amount should be repaid on August 22, 2018. The loans were not repaid on time due to the stricter foreign exchange control in the PRC. As of September 30, 2019, the Company totally pledged RMB349.0 million (equivalent to US$49.3 million) restricted cash to secure the repayment of the above loan. In accordance with the renewal agreements dated October 30, 2019, the repayment term of the loan was extended and the loan will be due on November 29, 2019. The loan will be repaid when the Company receive the US$135.0 million loan from the consortium of banks and financial institutions led by Industrial and Commercial Bank of China (Macau) Limited pursuant to the facility agreement dated October 2, 2019, details please refer to Note 22.

During 2017, the Company obtained four long-term unsecured loans of RMB430.0 million (equivalent to US$60.8 million) from Nanchong Shuntou Development Group Co., Ltd. at an annual interest rate of 4.35%. In accordance with the renewal agreements on April 2, 2019, the repayment terms of the four loans were extended and the loans would be due on September 30, 2019. As of September 30, 2019, the loans were due and repayment terms have not been extended. The Company is currently negotiating with Nanchong Shuntou Development Group Co., Ltd for the extension.

On December 1, 2017, the Company obtained a seven-year unsecured loan of RMB526.3 million (equivalent to US$74.4 million) from Longjiang Bank, Harbin Branch at an annual interest rate of 4.9%. The Company borrowed another long-term loan in amount of RMB169.1 million (equivalent to US$23.9 million) in January 2018 at an annual interest rate of 4.9%. The Company repaid RMB15.0 million (equivalent to US$2.1 million) on June 30, 2019. RMB20.0 million (equivalent to US$2.8 million), RMB35.0 million (equivalent to US$5.0 million), RMB35.0 million (equivalent to US$5.0 million), RMB70.0 million (equivalent to US$9.9 million), RMB70.0 million (equivalent to US$9.9 million), RMB90.0 million (equivalent to US$12.7 million), RMB90.0 million (equivalent to US$12.7 million) and RMB270.4 million (equivalent to US$38.2 million) will be repaid on December 30, 2019, June 30, 2020, December 30, 2020, June 30, 2021, December 30, 2021, June 30, 2022, December 30, 2022 and after 2022, respectively.

On June 17, 2019, the Company obtained a long-term loan of RMB600.0 million (equivalent to US$84.8 million) from Longjiang Bank, Harbin Branch at an annual interest rate of 5.635%. RMB100.0 million (equivalent to US$14.2 million), RMB100.0 million (equivalent to US$14.2 million), RMB200.0 million (equivalent to US$28.2 million), RMB200.0 million (equivalent to US$28.2 million), will be repaid in 2021, 2022, 2023, and 2024, respectively. In September 2019, the Company obtained another long-term loan of RMB219.6 million (equivalent to US$31.1 million) from Longjiang Bank, Harbin Branch at an annual interest rate of 5.635%, and the loan will be repaid in 2025.

On December 26, 2018, the Company obtained a five-year secured loan of AED8.0 million (equivalent to US$2.2 million) from National Bank of Umm Al Qaiwain at an interest rate of three-month EBOR (2.35% as of September 30, 2019) plus 3.75%. The long-term loan was secured by an undated cheque of AED8.8 million (equivalent to US$2.4 million) favouring the bank provided by Dubai Xinda. The cheque would not be cashed by the bank unless Dubai Xinda defaults. Principal will be repaid in ten half-yearly installments of AED0.8 million (equivalent to US$0.2 million) each. The Company repaid AED0.8 million (equivalent to US$0.2 million) on June 30, 2019.

In January 2019, the Company obtained a two-year secured loan of RMB500.0 million (equivalent to US$70.7 million) from China Construction Bank. The long-term loan was secured by the right of equity income of Sichuan Xinda, which was previously held by the Company. The registration of pledge was completed in January 2019.

15 

Maturities on long-term bank loans (including current portion) are as follows:

	September 30, 2019
		US$
2019		181,410,945
2020		10,332,528
2021		105,060,291
2022		40,023,319
After 2022		126,268,573
Total		463,095,656

Note 9 – Accrued expenses and other current liabilities

Accrued expenses and other current liabilities consist of the following:

	September 30, 2019		December 31, 2018
		US$		US$
Payables for purchase of property, plant and equipment		14,038,643		53,059,897
Accrued freight expenses		14,341,777		25,908,990
Accrued interest expenses		10,012,097		8,873,532
Contract liabilities (i)		16,248,016		16,105,245
Non income tax payables		4,617,298		6,425,236
Payables to Macromolecule Composite Materials (ii)		19,422,453		—
Others (iii)		19,822,979		16,553,998
Total accrued expenses and other current liabilities		98,503,263		126,926,898

(i) Contract liabilities mainly represent the advance received from customers in the PRC for the finished goods and raw materials purchases as of September 30, 2019. The change in contract liabilities primarily represents the cash received, less amounts recognized as revenues during the period.

(ii) As of September 30, 2019, the Company owed Heilongjiang Xinda Macromolecule Composite Materials Company Limited (“Macromolecule Composite Materials”) US$19.4 million, which was subsequently settled in October 2019.

(iii) Others mainly represent accrued payroll and employee benefits, accrued audit and consulting fees, electricity fee and other accrued miscellaneous operating expenses.

16 

Note 10 – Related Party Transactions

The related party transactions are summarized as follows:

	Three-Month Period Ended September 30,						Nine-Month Period Ended September 30,
	2019			2018			2019			2018
	US$			US$			US$			US$
Transactions with related parties:
Revenues resulting from transactions with a related party:
Sales to Macromolecule Composite Materials (v)		734,895			—			1,040,485			—
Financing transactions with related parties:
Investment received in advance from Changmu (i)		—			—			—			75,567,512
Refund of investment received in advance to Changmu (i)		—			(75,567,512	)		—			(75,567,512	)
Proceeds of interest-free advances from Changmu (i)		—			3,779,509			—			3,779,509
Interest-free advances from Mr. Jie Han (ii)		—			1,162,926			2,920,049			1,162,926
Repayment of interest-free advances from Mr. Jie Han (ii)		(116,802	)		—			(116,802	)		—
Interest-free advances from Mr. Jie Han’s son(ii)		8,760,147			726,830			8,760,147			726,830
Interest-free advances from senior management employee in HLJ Xinda Group and Sichuan Xinda (iii)		—			8,587,164			275,234			8,587,164
Repayment of interest-free advances from senior management employees in HLJ Xinda Group and Sichuan Xinda (iii)		(292,005	)		—			(4,679,484	)		—
Interest-free advances from Mr. Qingwei Ma (iv)		4,526,076			—			4,526,076			—
Repayment of interest-free advances from Mr. Qingwei Ma (iv)		(730,012	)		—			(730,012	)		—
Interest-free advances from Macromolecule Composite Materials (v)		—			—			63,488,212			—
Repayment of interest-free advances from Macromolecule Composite Materials (v)		(2,935,570	)		—			(63,017,445	)		—
Total financing transactions with related parties		9,211,834			(61,311,083	)		11,425,975			14,256,429

17 

The related party balances are summarized as follows:

	September 30, 2019		December 31, 2018
		US$		US$
Amounts due to related parties:
Mr. Jie Han		12,328,748		9,907,915
Mr. Jie Han’s wife		3,101,479		3,180,965
Mr. Jie Han’s son		9,190,007		728,523
Senior management employees in HLJ Xinda Group and Sichuan Xinda		148,530		4,548,335
Mr. Qingwei Ma		3,676,003		—
Total amounts due to related parties		28,444,767		18,365,738

(i) On July 14, 2018, Xinda Holding (HK) entered into a subscription intent agreement with Changmu Investment (Beijing) Company Limited (“Changmu”), a company wholly controlled by Mr. Tiexin Han, the son of Mr. Jie Han, the Chief Executive Officer and Chairman of the Company. Pursuant to the terms of the agreement, HLJ Xinda Group received RMB500.0 million (equivalent to US$75.6 million) from Changmu on June 29, 2018 as deposits in order to subscribe newly authorized registered capital of HLJ Xinda Group subject to further negotiations. Due to the inability to reach agreement on the terms, both parties agreed not to proceed with any definitive agreement. Therefore, HLJ Xinda Group refunded the investment received in advance from Changmu in September 2018.

During the nine-month period ended September 30, 2018, the Company also received RMB26.0 million (equivalent to US$3.8 million) from Changmu as interest-free advances.

(ii) During the nine-month ended September 30, 2018, the Company received RMB8.0 million (equivalent to US$1.2 million) from Mr. Jie Han, the Chairman of the Company, and RMB5.0 million (equivalent to US$0.7 million) from Mr. Tiexin Han, the son of Mr. Jie Han, as interest-free advances to the Company.

During the nine-month period ended September 30, 2019, the Company received another RMB20.0 million (equivalent to US$2.9 million) from Mr. Jie Han as interest-free advances and repaid RMB0.8 million (equivalent to US$0.1 million). As of September 30, 2019, the amounts due to Mr. Jie Han was RMB87.2 million (equivalent to US$12.3 million).

During the nine-month period ended September 30, 2019, the Company received another RMB60.0 million (equivalent to US$8.8 million) from Mr. Tiexin Han as interest-free advances. As of September 30, 2019, the amounts due to Mr. Tiexin Han was RMB65.0 million (equivalent to US$9.2 million).

(iii) In August 2018, the Company received RMB10.0 million (equivalent to US$1.5 million) each from three senior management employees (Messers Junjie Ma, Yuchong Jia, Guangjun Jiao) of Sichuan Xinda as interest-free advances to Sichuan Xinda. During the nine-month period ended September 30, 2018, the Company also received RMB29.1 million (equivalent to US$4.2 million) from a senior management employee (Mr. Rujun Dai) of HLJ Xinda Group as interest-free advances to HLJ Xinda Group.

In April 2019, the Company repaid the RMB30.0 million (equivalent to US$4.4 million) to the senior management employees in Sichuan Xinda. During the nine-month period ended September 30, 2019, the Company received another RMB1.9 million (equivalent to US$0.3 million) from Mr. Rujun Dai and repaid RMB2.0 million (equivalent to US$0.3 million) to Mr. Rujun Dai. As of September 30, 2019, the amounts due to Mr. Rujun Dai was RMB1.1 million (equivalent to US$0.1 million).

(iv) During the nine-month period ended September 30, 2019, the Company received RMB31.0 million (equivalent to US$4.5 million) from Qingwei Ma, the Chief Operating Officer of the Company, as interest-free advances to the Company, and repaid RMB5.0 million (equivalent to US$0.7 million). As of September 30, 2019, the amounts due to Mr. Qingwei Ma was RMB26.0 million (equivalent to US$3.7 million).

18 

(v) On December 26, 2018, Shanghai Sales set up Heilongjiang Xinda Macromolecule Composite Materials Company Limited. On April 22, 2019, Shanghai Sales transferred 97.5% equity interest in Macromolecule Composite Materials to Harbin Shengtong Engineering Plastics Co. Ltd. ("Harbin Shengtong"). Mr. Xigang Chen, who was the general manager of Sichuan Xinda, is the general manager and also the principal shareholder of Harbin Shengtong.

Since Mr. Xigang Chen resigned from Sichuan Xinda on August 5, 2019, Macromolecule Composite Materials was no longer a related party of the Company.

During the period from April 22, 2019 through August 5, 2019, the Company sold products to Macromolecule Composite Materials in US$1.0 million.

During the period from April 22, 2019 through August 5, 2019, the Company received RMB434.4 million (equivalent to US$63.5 million) of interest-free advances from Macromolecule Composite Materials and repaid RMB431.6 million (equivalent to US$63.0 million).

Note 11– Income tax

Pursuant to an approval from the local tax authority in July 2013, Sichuan Xinda, a subsidiary of China XD, became a qualified enterprise located in the western region of the PRC, which entitled it to a preferential income tax rate of 15% from January 1, 2013 to December 31, 2020. Under the current laws of Dubai, Dubai Xinda, a subsidiary of China XD, is exempted from income taxes.

The effective income tax rates for the nine-month periods ended September 30, 2019 and 2018 were 14.8% and 12.9%, respectively. The effective income tax rate increased from 12.9% for the nine-month period ended September 30, 2018 to 14.8% for the nine-month period ended September 30, 2019, primarily due to the decrease of Sichuan Xinda’s profit before tax (“PBT”) percentage within the consolidating entities. The effective income tax rate for the nine-month period ended September 30, 2019 differs from the PRC statutory income tax rate of 25% primarily due to Sichuan Xinda's preferential income tax rate, the reversal of the unrecognized tax benefits accrued in year 2013 and 75% additional deduction of R&D expenses of the major PRC operating entities.

US$3,572,637 previously unrecognized tax benefits accrued in year 2013 and the related accrued interest amounting to US$3,116,216 were reversed due to the expiration of five-year tax assessment period on May 31, 2019. As of September 30, 2019, the unrecognized tax benefits were US$33,663,442 and the interest relating to unrecognized tax benefits was US$12,376,126, of which the unrecognized tax benefits in year 2014 amounting to US$5,578,390 and related accrued interest amounting to US$4,351,145 were classified as current liabilities as the five-year tax assessment period will expire on May 31, 2020. No penalties expense related to unrecognized tax benefits were recorded. The Company is currently unable to provide an estimate of a range of the total amount of unrecognized tax benefits that is reasonably possible to change significantly within the next twelve months.

Note 12 – Deferred Income

On January 26, 2015, the Company entered into a memorandum and a fund support agreement (the "Agreement") with the People's Government of Shunqing District, Nanchong City, Sichuan Province ("Shunqing Government") pursuant to which Shunqing Government, through its investment vehicle, extended to the Company RMB350 million (equivalent to US$49.5 million) to support the construction of the Sichuan plant, which has been received in full in the form of government repayment of bank loans on behalf of the Company.

In addition, the Company has received RMB333.2 million (equivalent to US$47.1 million) from Shunqing Government and RMB6.4 million (equivalent to US$0.9 million) from Ministry of Finance of the People's Republic of China to support the construction and RMB2.2 million (equivalent to US$0.3 million) special funds of ministerial key research projects from Ministry of Science and Technology of PRC as of September 30, 2019.

19 

The Company has also received RMB45.0 million (equivalent to US$6.4 million) from Harbin Bureau of Finance for Biomedical composites project as of September 30, 2019.

Since the funding is related to the construction of long-term assets, the amounts were recognized as government grant, which is included in deferred income on the consolidated balance sheets, and to be recognized as other income in the consolidated statements of comprehensive income over the periods and in the proportions in which depreciation expense on the long-term assets is recognized.

The Sichuan factory has been operational since July 2016. A cumulative RMB97.1 million (equivalent to US$13.8 million) government grants have been amortized as other income proportionate to the depreciation of the related assets, of which RMB25.5 million (equivalent to US$3.6 million) was amortized in the nine-month period ended September 30, 2019.

The Company also received RMB36.0 million (equivalent to US$5.1 million) from Shunqing Government with respect to interest subsidy for bank loans. A cumulative RMB16.4 million (equivalent to US$2.3 million) government grants have been amortized as other income in line with the amount of related loan interest accrued.

 Note 13 – Other non-current liabilities

	September 30,		December 31,
	2019		2018
		US$		US$
Income tax payable-noncurrent (i)		89,976,096		92,461,068
Deferred income tax liabilities		5,062,698		6,716,921
Others		—		2,395,783
Total other non-current liabilities		95,038,794		101,573,772

(i) Income tax payable-noncurrent represents the repatriation tax, the accumulative balance of unrecognized tax benefits since 2015 and related accrued interest. According to the Tax Cuts and Jobs Act enacted on December 22, 2017, the management recognized the amount of U.S. tax corporate income tax is US$70,965,148 based on the deemed repatriation to the United States of accumulated earnings mandated by the U.S. tax reform, US$17,031,636 of which due payable in 2018 and 2019 was classified as current liabilities.

Note 14 – Redeemable Series D convertible preferred stock

On September 26, 2019, the Company delivered an irrevocable notice pursuant to Section 6(C)(ii) of the Amended and Restated Certificate of Designation, Preferences and Rights of Series D Junior Convertible Preferred Stock (the “Certificate of Designation”), to MSPEA Modified Plastics Holding Limited (“MSPEA”), and exercised its right set forth in Section 6(C)(i) of the Certificate of Designation for the mandatory conversion of each outstanding share of the redeemable Series D convertible preferred stock (“Series D Preferred Stock”) into 16,000,000 fully paid and nonassessable shares of common stock. As of September 26, 2019, 16,000,000 shares of Series D Preferred Stock were thus converted into 16,000,000 shares of common stock.

20 

 Note 15 – Stockholders' equity

The changes of each caption of stockholders' equity for the nine-month period ended September 30, 2019 are as follows:

	Series B Preferred Stock				Common Stock											Accumulated
	Number of Shares		Amount		Number of Shares		Amount		Treasury Stock			Additional Paid-in Capital		Retained Earnings		Other Comprehensive Loss			Total Stockholders' Equity
			US$				US$		US$			US$		US$		US$			US$
Balance at January 1, 2019		1,000,000		100		50,948,841		5,097		(92,694	)		86,633,582		717,103,890		(54,732,547	)		748,917,428
Net income		-		-		-		-		-			-		68,057,245		-			68,057,245
Series D Preferred Stock converted to common stock		-		-		16,000,000		1,600		-			97,574,865		-		-			97,576,465
Other comprehensive income - Foreign currency translation adjustment, net of nil income taxes		-		-		-		-		-			-		-		(24,732,543	)		(24,732,543	)
Balance as of September 30, 2019		1,000,000		100		66,948,841		6,697		(92,694	)		184,208,447		785,161,135		(79,465,090	)		889,818,595

Note 16– Stock based compensation

Non-vested shares

The Company recognized nil and US$45,339 of compensation expense in general and administrative expenses relating to non-vested shares for the three-month periods ended September 30, 2019 and 2018, respectively, and nil and US$2,675,115 for the nine-month periods ended September 30, 2019 and 2018, respectively. As of September 30, 2019, there was no unrecognized compensation cost relating to non-vested shares.

Stock options

The Company recognized nil and US$595,044 of share-based compensation expense in general and administrative expenses relating to stock options for the three-month and nine-month periods ended September 30, 2019 and 2018, respectively.

Note 17 - Earnings per share

Basic and diluted earnings per share are calculated as follows:

	Three-Month Period Ended September 30,						Nine-Month Period Ended September 30,
	2019			2018			2019			2018
	US$			US$			US$			US$
Net income		16,965,213			8,964,941			68,057,245			55,288,920
Less:
Earnings allocated to participating Series D convertible preferred stock		(3,834,137	)		(2,140,971	)		(15,967,004	)		(13,257,752	)
Earnings allocated to participating nonvested shares		—			(8,904	)		—			(106,113	)
Net income for basic and diluted earnings per share		13,131,076			6,815,066			52,090,241			41,925,055
Denominator
Denominator for basic earnings per share		51,818,406			50,930,653			51,241,881			50,596,880
Dilutive effect of outstanding share options		—			32,944			—			32,944
Denominator for diluted earnings per share		51,818,406			50,963,597			51,241,881			50,629,824
Earnings per share:
Basic and diluted		0.25			0.13			1.02			0.83

The following table summarizes potentially dilutive securities excluded from the calculation of diluted earnings per share for the three-month periods and nine-month periods ended September 30, 2019 and 2018 because their effects are anti-dilutive:

	Three-Month Period Ended September 30,				Nine-Month Period Ended September 30,
	2019		2018		2019		2018
Shares issuable upon conversion of Series D convertible preferred stock		15,130,435		16,000,000		15,706,960		16,000,000

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Note 18 - Commitments and contingencies

(1) Sichuan plant construction and equipment purchase.

On March 8, 2013, Xinda Holding (HK) entered into an investment agreement with Shunqing Government, pursuant to which Xinda Holding (HK) will invest RMB1,800 million (equivalent to US$254.5 million) in property, plant and equipment and approximately RMB600 million (equivalent to US$84.8 million) in working capital, for the construction of Sichuan plant.  As of September 30, 2019, the Company has a remaining commitment of RMB54.8 million (equivalent to US$7.7 million) mainly for facility construction.

In September 2016, Sichuan Xinda entered into equipment purchase contracts with Hailezi for a consideration of RMB17.0 million (equivalent to US$2.4 million) to purchase storage facility and testing equipment. Afterward, Sichuan Xinda cancelled two contracts with Hailezi for a consideration of RMB1.6 million (equivalent to US$0.2 million). As of September 30, 2019, Sichuan Xinda prepaid RMB6.0 million (equivalent to US$0.9 million) and has a remaining commitment of RMB9.4 million (equivalent to US$1.3 million).

On October 20, 2016, Sichuan Xinda entered into an equipment purchase contract with Peaceful Treasure Limited ("Peaceful") for a total consideration of RMB89.8 million (equivalent to US$12.7 million) to purchase certain production and testing equipment. As of September 30, 2019, the Company has a commitment of RMB55.9 million (equivalent to US$7.9 million).

On November 15, 2016, Sichuan Xinda entered into decoration contract with Beijin Construction to perform indoor and outdoor decoration work for a consideration of RMB237.6 million (equivalent to US$33.6 million).  On February 20, 2017, Sichuan Xinda entered into another decoration contract with Beijin Construction to perform outdoor decoration work for a consideration of RMB2.9 million (equivalent to US$0.4 million). On June 10, 2017, Sichuan Xinda entered into another decoration contract with Beijin Construction to perform ground decoration work for a consideration of RMB23.8 million (equivalent to US$3.4 million). As of September 30, 2019, Sichuan Xinda prepaid RMB120.9 million (equivalent to US$17.1 million) of which RMB74.0 million (equivalent to US$10.4 million) was transferred to construction in progress and has a remaining commitment of RMB143.4 million (equivalent to US$20.3 million).

In connection with the Nanchong Project mentioned in Note 6 (i), Sichuan Xinda entered into equipment purchase contracts with Hailezi for a consideration of RMB2,242.8 million (equivalent to US$317.1 million) to purchase production equipment and testing equipment in March 2017.  By the end of June 2017, Sichuan Xinda expected to launch an integrated ERP system, which resulted in the equipment to be purchased under the original contracts with Hailezi not meeting the production requirements. Thus the original contracts have been terminated with the amount of RMB2,222.9 million (equivalent to US$314.3 million), and Hailezi agreed to refund the prepayment in the amount of RMB1,704.9 million (equivalent to US$241.0 million) by the end of March 2018, out of the total prepayment made by Sichuan Xinda of RMB1,722.9 million (equivalent to US$243.5 million). As of June 30, 2018, Hailezi has refunded the prepayment in the amount of RMB1,704.9 million (equivalent to US$241.0 million). As of September 30, 2019, Sichuan Xinda prepaid RMB18.0 million (equivalent to US$2.5 million) and has a remaining commitment of RMB1.9 million (equivalent to US$0.3 million).

22 

In connection with the Nanchong Project, on June 21, 2018, Sichuan Xinda entered into another equipment purchase contracts with Hailezi to purchase production equipment and testing equipment for a consideration of RMB1,900.1 million (equivalent to US$268.7 million). Pursuant to the contracts with Hailezi, Sichuan Xinda has prepaid RMB1,710.1 million (equivalent to US$241.8 million) as of September 30, 2019, and has a remaining commitment of RMB190.0 million (equivalent to US$26.9 million).

(2)  Heilongjiang plant construction and equipment purchase

In connection with the equipment purchase contracts with Hailezi signed on September 26, 2016 and February 28, 2017 mentioned in Note 6 (i), HLJ Xinda Group has a remaining commitment of RMB30.2 million (equivalent to US$4.3 million) as of September 30, 2019.

In connection with the "HLJ Project" mentioned in Note 6 (i), pursuant to the three investment agreements, the project total capital expenditure will be RMB4,015.0 million (equivalent to be US$567.7 million), among which the investment in fixed assets shall be no less than RMB3,295.0 million (equivalent to US$465.9 million) in total. Pursuant to the contracts with Hailezi signed in November 2017 mentioned in Note 6 (i), HLJ Xinda Group has a remaining commitment of RMB18.8 million (equivalent to US$2.7 million) as of September 30, 2019.

In connection with the HLJ project, on June 25, 2018, HLJ Xinda Group entered into another equipment purchase contract with Hailezi to purchase production equipment, which will be used for 300,000 metric tons of biological based composite material, located in Harbin, for a consideration of RMB749.8 million (equivalent to US$106.0 million). Pursuant to the contract with Hailezi, HLJ Xinda Group has prepaid RMB300.7 million (equivalent to US$42.5 million) as of September 30, 2019, and has a remaining commitment of RMB449.1 million (equivalent to US$63.5 million).

In connection with the HLJ Project, on July 12, 2018, HLJ Xinda Group entered into an equipment purchase contract with Hailezi to purchase production equipment, which will be used for 300,000 metric tons of biological based composite material, located in Harbin, for a consideration of RMB1,157.0 million (equivalent to US$163.6 million). Pursuant to the contract with Hailezi, HLJ Xinda has prepaid RMB240.8 million (equivalent to US$34.0 million) as of September 30, 2019, and has a remaining commitment of RMB916.2 million (equivalent to US$129.6 million).

(3)  Dubai plant construction and equipment

On April 28, 2015, Dubai Xinda entered into a warehouse construction contract with Falcon Red Eye Contracting Co. L.L.C. for a total consideration of AED6.7 million (equivalent to US$1.8 million). As of September 30, 2019, the Company has a remaining commitment of AED1.6 million (equivalent to US$0.4 million).

On May 31, 2019, Dubai Xinda entered into a warehouse construction contract with Peaceful for a total consideration of US$18.8 million. As of September 30, 2019, the Company has a remaining commitment of US$6.7 million.

(4)   Xinda CI (Beijing) office building decoration

On March 30, 2017, Xinda CI (Beijing) Investment Holding Co., Ltd. ("Xinda Beijing Investment") entered into a decoration contract with Beijing Fangyuan Decoration Engineering Co., Ltd. for a total consideration of RMB5.8 million (equivalent to US$0.8 million) to decorate office building. As of December 31, 2018, the decoration work in the amount of RMB2.0 million (equivalent to US$0.3 million) was recorded in construction in progress. As of September 30, 2019, the Company has a remaining commitment of RMB3.8 million (equivalent to US$0.5 million).

On June 9, 2017, Xinda CI (Beijing) entered into a decoration contract with Beijing Zhonghongwufang Stone Co., Ltd for a total consideration of RMB1.2 million (equivalent to US$0.2 million) to decorate office building. As of December 31, 2018, the decoration work in the amount of RMB0.6 million (equivalent to US$0.1 million) was recorded in construction in progress. As of September 30, 2019, the Company has a remaining commitment of RMB0.6 million (equivalent to US$0.1 million).

23 

(5) Guarantees

On December 25, 2018, HLJ Xinda Group, Sichuan Xinda and Mr. Jie Han provided guarantee to Shanghai Sales obtaining a one-year loan of RMB500.0 million (equivalent to US$70.7) from Longjiang Bank, Harbin Branch with an annual interest rate of 6.09% from December 25, 2018 to December 24, 2019. If Shanghai Sales does not repay the above loan when due, HLJ Xinda Group, Sichuan Xinda and Mr. Jie Han shall be obliged to repay the RMB500.0 million loan.

On April 15, 2019, Sichuan Xinda provided guarantee to Shanghai Sales obtaining a one-year loan of RMB800.0 million (equivalent to US$113.1 million) from Longjiang Bank, Harbin Branch with an annual interest rate of 6.09% from April 15, 2019 to April 14, 2020. If Shanghai Sales does not repay the above loan when due, Sichuan Xinda shall be obliged to repay the RMB800.0 million loan.

In the event of Shanghai Sales defaults on the loans, the Company’s material loss contingency would be RMB1.379 billion (equivalent to US$195.0 million), including estimated interest expenses of RMB79.2 million (equivalent to US$11.2 million) as of September 30, 2019. As the Company estimated that the potential material loss contingency was not probable, no accrual for a loss contingency was recognized for the nine-month period ended September 30, 2019.

Note 19 - Revenues

Revenues consist of the following:

	Three-Month Period Ended September 30,				Nine-Month Period Ended September 30,
	2019		2018		2019		2018
	US$		US$		US$		US$
Modified Polyamide 66 (PA66)		120,234,670		72,832,370		296,372,085		242,690,994
Modified Polyamide 6 (PA6)		78,940,503		54,018,912		250,529,646		180,317,333
Plastic Alloy		66,353,485		76,511,378		200,901,936		234,487,071
Modified Polypropylene (PP)		32,666,069		60,923,190		110,518,373		158,280,180
Modified Acrylonitrile Butadiene Styrene (ABS)		12,437,078		6,299,771		40,662,342		23,128,606
Polyoxymethylenes (POM)		2,053,799		2,881,985		6,953,161		7,753,725
Polyphenylene Oxide (PPO)		5,490,232		2,425,361		31,482,628		13,215,599
Polylactide (PLA)		17,525,906		20,854,274		46,789,233		64,583,387
Polyethylene (PE)		4,103,483		—		7,707,560		—
Work in progress		33,062,822		—		145,362,837		—
Raw materials		291,044		477,499		419,177		550,398
Total Revenue		373,159,091		297,224,740		1,137,698,978		925,007,293

The following table provides sales by major customer group for the three-month and nine-month periods ended September 30, 2019 and 2018:

	Three-month Period Ended September 30,				Nine-month Period Ended September 30,
	2019		2018		2019		2018
	US$		US$		US$		US$
Distributor		312,919,940		292,507,429		918,602,515		911,068,381
Direct customers		59,948,107		4,239,812		218,677,286		13,388,514
Others		291,044		477,499		419,177		550,398
Total		373,159,091		297,224,740		1,137,698,978		925,007,293

24 

Note 20 - Gains on disposal of a subsidiary

On November 13, 2018, HLJ Xinda Group entered into an agreement with Shanghai Sales, to transfer the wholly owned equity of Heilongjiang Xinda Enterprise Group (Shanghai) New Materials Research and Development Co., Ltd. ("Shanghai New Materials R&D") from HLJ Xinda Group to Shanghai Sales with no consideration as a result of group restructuring to streamline resources and improve operating efficiency.

The legal transfer was completed on February 1, 2019 and the Company recorded gains of US$0.5 million on disposal of Shanghai New Materials R&D for the nine-month period ended September 30, 2019.

Note 21 - Leases

As discussed in Note 1, effective January 1, 2019, the Company adopted Topic 842. At the inception of a contract, the Company determines if the arrangement is, or contains, a lease. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent its obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. Rent expense is recognized on a straight-line basis over the lease term.

The Company has made certain accounting policy elections whereby it does not recognize ROU assets or lease liabilities for short-term leases (those with original terms of 12-months or less). All of the Company’s existing leases as of September 30, 2019 were classified as operating leases. As of September 30, 2019, the Company had operating leases for land and office with remaining terms expiring from 2022 through 2037 and a weighted average remaining lease term of 17.5 years. Weighted average discount rate used in the calculation of the lease liabilities was 6.7%. The discount rate reflects the estimated incremental borrowing rate, which includes an assessment of the credit rating to determine the rate that the Company would have to pay to borrow, on a collateralized basis for a similar term, an amount equal to the lease payments in a similar economic environment.

Lease cost for the nine-month period ended September 30, 2019 is as follows:

	Nine-Month Period Ended September 30,
	2019
		US$
Operating lease cost		1,271,455
Short-term lease cost		432,124
Total lease cost		1,703,579

As of September 30, 2019, the maturities of the operating lease liabilities are as follows:

	Remaining Lease Payments US$
2019	346,192
2020	1,386,124
2021	1,408,598
2022	1,408,979
2023	1,424,857
Thereafter	22,023,858
Total remaining lease payments	27,998,608
Less:  imputed interest	(12,094,615	)
Total operating lease liabilities	15,903,993
Less: current portion	(1,390,531	)
Non-current operating lease liabilities	14,513,462
Weighted-average remaining lease term	17.5 years
Weighted-average discount rate	6.7	%

25 

Supplemental cash flow information related to leases is as follows:

	Nine-Month Period Ended September 30,
Supplemental disclosure of cash flow information:	2019
		US$
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases		1,707,618
Right-of-use assets obtained in exchange for new lease liabilities:
Operating lease		16,075,213

As previously disclosed in the consolidated financial statement for the year ended December 31, 2018 and under the previous lease standard (Topic 840), future minimum annual lease payments for the years subsequent to December 31, 2018 and in aggregate are as follows:

	US$
Years ended December 31,
2019		2,174,439
2020		1,486,007
2021		1,486,007
2022		1,446,251
2023		1,482,593
Thereafter		21,176,139

Rental expenses incurred for operating leases of plant and equipment and office spaces were US$2,455,509 in 2018.

Note 22 - Subsequent Event

(i) Xinda Holding (HK) Company Limited, a wholly owned subsidiary of the Company, entered into a facility agreement on October 2, 2019 for a loan facility in an aggregate amount of US$135,000,000 with a consortium of banks and financial institutions led by Industrial and Commercial Bank of China (Macau) Limited. 

(ii) As a result of the Mandatory Conversion (see Note 14), the term of office of MSPEA’s two designees on the Board, Homer Sun and Ryan Law, was automatically terminated.  On October 14, 2019, MSPEA sent a letter (the "Proposal Withdrawal Letter") to the Board informing the Board that it no longer intended to participate in the consortium consisting of XD Engineering Plastics Company Limited, Mr. Han and MSPEA (the “Consortium”) and no longer intended to participate in the going-private transaction (the “Transaction”).  Concurrently with sending the Proposal Withdrawal Letter, MSPEA sent a letter (the "Consortium Withdrawal Letter") to the other members of the Consortium informing them that it no longer intended to participate in the Consortium and no longer intended to participate in the Transaction.

26 

Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

We make forward-looking statements in this report, in other materials we file with the Securities and Exchange Commission (the "SEC") or otherwise release to the public, and on our website. In addition, our senior management might make forward-looking statements orally to analysts, investors, the media and others. Statements concerning our future operations, prospects, strategies, financial condition, future economic performance (including growth and earnings) and demand for our products and services, and other statements of our plans, beliefs, or expectations, including the statements contained in this Item 2 "Management's Discussion and Analysis of Financial Condition and Results of Operation," regarding our future plans, strategies and expectations are forward-looking statements. In some cases these statements are identifiable through the use of words such as "anticipate," "believe," "estimate," "expect," "intend," "plan," "project," "target," "can," "could," "may," "should," "will," "would" and similar expressions. We intend such forward-looking statements to be covered by the safe harbor provisions contained in Section 27A of the Securities Act of 1933, as amended (the "Securities Act") and in Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). You are cautioned not to place undue reliance on these forward-looking statements because these forward-looking statements we make are not guarantees of future performance and are subject to various assumptions, risks, and other factors that could cause actual results to differ materially from those suggested by these forward-looking statements. Thus, our ability to predict results or the actual effect of future plans or strategies is inherently uncertain. Factors which could have a material adverse effect on our operations and future prospects include, but are not limited to, changes in: economic conditions generally and the automotive modified plastics market specifically, legislative or regulatory changes that affect our business, including changes in regulation, the availability of working capital, the introduction of competing products, and other risk factors described herein. These risks and uncertainties, together with the other risks described from time-to-time in reports and documents that we filed with the SEC should be considered in evaluating forward-looking statements and undue reliance should not be placed on such statements. Indeed, it is likely that some of our assumptions will prove to be incorrect. Our actual results and financial position will vary from those projected or implied in the forward-looking statements and the variances may be material. We expressly disclaim any obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Overview

China XD is one of the leading specialty chemical companies engaged in the research, development, manufacture and sale of modified plastics primarily for automotive applications in China, and to a lesser extent, in Dubai, UAE. Through our wholly-owned operating subsidiaries in China and UAE, we develop modified plastics using our proprietary technology, manufacture and sell our products primarily for use in the fabrication of automobile parts and components. We have 595 certifications from manufacturers in the automobile industry as of September 30, 2019. We are the only company certified as a National Enterprise Technology Center in modified plastics industry in Heilongjiang province.  Our Research and Development (the "R&D") team consists of 137 professionals and 7 consultants. As a result of the integration of our academic and technological expertise, we have a portfolio of 463 patents, 32 of which we have obtained the patent rights and the remaining 431 of which we have applications pending in China as of September 30, 2019.

Our products include twelve categories: Modified Polypropylene (PP), Modified Acrylonitrile Butadiene Styrene (ABS), Modified Polyamide 66 (PA66), Modified Polyamide 6 (PA6), Modified Polyoxymethylenes (POM), Modified Polyphenylene Oxide (PPO), Plastic Alloy, Modified Polyphenylene Sulfide (PPS), Modified Polyimide (PI), Modified Polylactic acid (PLA), Poly Ether Ether Ketone (PEEK), and Polyethylene (PE).

27 

The Company's products are primarily used in the production of exterior and interior trim and functional components of 31 automobile brands and 103 automobile models manufactured in China, including Audi, Mercedes Benz, BMW, Toyota, Buick, Chevrolet, Mazda, Volvo, Ford, Citroen, Jinbei, VW Passat, Golf, Jetta, etc.  Our research center is dedicated to the research and development of modified plastics, and benefits from its cooperation with well-known scientists from prestigious universities in China. We operate three manufacturing plants in Harbin, Heilongjiang in the PRC. As of September 30, 2019, in Harbin, Heilongjiang Province, we had approximately 290,000 metric tons of production capacity across 64 automatic production lines utilizing German twin-screw extruding systems, automatic weighing systems and Taiwanese conveyer systems. In December 2013, we broke ground on the construction of our fourth production plant in Nanchong City, Sichuan Province, with additional 300,000 metric tons of annual production capacity, which we expect will bring total domestic installed production capacity to 590,000 metric tons with the addition of 70 new production lines upon the completion of the construction of our fourth production plant. Sichuan Xinda has been supplying to its customers since 2013. We installed 50 production lines in the second half of 2016 in our Sichuan plant with production capacity of 216,000 metric tons during the year of 2017 and an additional 10 production lines in July 2018, bringing the total capacity to 259,200 metric tons. As of September 30, 2019, there is still construction ongoing on the site of our Sichuan plant which is to be expected to be completed by the end of the fourth quarter of 2019. In order to develop potential overseas markets, Dubai Xinda obtained one leased property and two purchased properties, approximately 52,530 square meters in total, including one leased 10,000 square meters, and two purchased 20,206 and 22,324 square meters on January 25, 2015, June 28, 2016 and September 21, 2016, respectively, from Jebel Ali Free Zone Authority ("JAFZA") in Dubai, UAE, with constructed building comprising warehouses, offices and service blocks. In addition to the earlier 10 trial production lines in Dubai Xinda, the Company completed installing 45 production lines with 11,250 metric tons of annual production capacity by the end of November 2018, and an additional 40 production lines with 13,000 metric tons of annual production capacity were still in construction ongoing, expected to be completed by the end of 2019, bringing total installed production capacity in Dubai Xinda to 24,250 metric tons, targeting high-end products for the overseas market.

In July 2017, the HLJ Xinda Group launched new industrial development project with the Management Committee of Harbin Economic-Technological Development Zone. It includes an industrial project for upgrading existing equipment for 100,000 metric tons of engineering plastics, which we expect will be completed by the end of second quarter of 2020. Also included is an industrial project for 300,000 metric tons of biological composite materials, an industrial project for a 3D printing intelligent manufacture demonstration factory and a 3D printing display and experience cloud factory, all of which we expect to be started by the end of fourth quarter 2019. 

Highlights for the three months ended September 30, 2019 include:

● Revenues were $373.2 million, an increase of 25.6% from $297.2 million in the third quarter of 2018

● Gross profit was $60.1 million, an increase of 27.3% from $47.2 million in the third quarter of 2018

● Gross profit margin was 16.1%, compared to 15.9% in the third quarter of 2018

● Net income was $17.0 million, compared to $9.0 million in the third quarter of 2018

● Total volume shipped was 92,001 metric tons, a decrease 15.5% from 108,832 metric tons in the third quarter of 2018

28 

Results of Operations

The following table sets forth, for the periods indicated, statements of income data in millions of USD:

	Three-Month Period Ended									Nine-Month Period Ended
	September 30,						Change			September 30,						Change
(in millions, except percentage)	2019			2018			%			2019			2018			%
Revenues		373.2			297.2			25.6	%		1,137.7			925.0			23.0	%
Cost of revenues		(313.1	)		(250.0	)		25.2	%		(962.0	)		(767.8	)		25.3	%
Gross profit		60.1			47.2			27.3	%		175.7			157.2			11.8	%
Total operating expenses		(26.3	)		(34.2	)		(23.1	)%		(61.0	)		(69.3	)		(12.0	)%
Operating income		33.8			13.0			160.0	%		114.7			87.9			30.5	%
Income before income taxes		22.6			5.5			310.9	%		80.0			63.5			26.0	%
Income tax benefit (expense)		(5.6	)		3.5			(260.0	)%		(11.9	)		(8.2	)		45.1	%
Net income		17.0			9.0			88.9	%		68.1			55.3			23.1	%

Revenues

Revenues were US$373.2 million in the third quarter ended September 30, 2019, representing an increase of US$76.0 million, or 25.6%, compared to US$297.2 million in the same period of last year, as a combined result of: i) an increase of 52.3% in the average RMB selling price of our products; and partially offset by ii) a decrease of 15.5% in sales volume; and iii) a depreciation of RMB against US dollars by 3.8%, as compared with those of last year.

(i) Domestic market

For the three-month period ended September 30, 2019, revenues from domestic market increased by US$55.1 million or 18.5% compared with that in the same period of last year, as a combined result of: i) an increase of 47.3% in the average RMB selling price of our products; partially offset by ii) a decrease of 17.4% in sales volume; and iii) a depreciation of RMB against US dollars by 3.8%, as compared with those of last year.

According to the China Association of Automobile Manufacturers, automobile production and sales in China decreased by 11.4% and 10.3%, respectively, for the first nine months of 2019 as compared to the same period of 2018. The weakening in macroeconomic conditions since summer of 2018 continued to exacerbate automobile business environment, but thanks to our positive efforts to expand our marketing areas and customer bases and to meet their new requirements, the Company has achieved sales growth of 51.6% in Central China, 45.9% in North China, 30.1% in Southwest China, 28.3% in Northeast China, and 0.9% in East China, partially offset by the sales decrease of 12.9% in Southern China.

As for the RMB selling price, the increase of 47.3% was mainly due to: i) increased sales of new categories of higher-end products of PA66 and PA6 produced with high-priced raw materials with higher selling price in domestic market; and ii) sales of high-priced work in progress in domestic market during the three-month period ended September 30, 2019.

(ii) Overseas market

For the three-month period ended September 30, 2019, revenues from overseas market were US$20.9 million as compared to US$2,104 of the same period of 2018.

After a successful trial production at our production base in Dubai in November 2018, the Company has established business relationships with new customers in UAE and India, and shipped products to the end users in Europe and Southeast Asia. We are optimistic about the prospect of our business expansion overseas.

29 

The following table summarizes the breakdown of revenues by categories in millions of US$: 

(in millions, except percentage)	Revenues For the Three-Month Period Ended September 30,
	2019					2018					Change in			Change in
	Amount		%			Amount		%			Amount			%
Modified Polyamide 66 (PA66)		120.2		32.2	%		72.8		24.5	%		47.4			65.1	%
Plastic Alloy		66.4		17.7	%		77.0		25.8	%		(10.6	)		(13.8	)%
Modified Polyamide 6 (PA6)		78.9		21.1	%		54.0		18.2	%		24.9			46.1	%
Modified Polypropylene (PP)		32.7		8.8	%		60.9		20.6	%		(28.2	)		(46.3	)%
Modified Acrylonitrile Butadiene Styrene (ABS)		12.4		3.3	%		6.3		2.1	%		6.1			96.8	%
Polyoxymethylenes (POM)		2.1		0.6	%		2.9		1.0	%		(0.8	)		(27.6	)%
Polyphenylene Oxide (PPO)		5.5		1.5	%		2.4		0.8	%		3.1			129.2	%
Modified Polylactic acid (PLA)		17.5		4.7	%		20.9		7.0	%		(3.4	)		(16.3	)%
Polyethylene (PE)		4.1		1.1	%		—		0.0	%		4.1			N/A
Work in progress		33.1		8.9	%		—		0.0	%		33.1			N/A
Raw Materials		0.3		0.1	%		0.0		0.0	%		0.3			N/A
Total Revenues		373.2		100	%		297.2		100	%		76.0			25.6	)%

The following table summarizes the breakdown of metric tons (MT) by product mix:

(in MTs, except percentage)	Sales Volume For the Three-Month Period Ended September 30,
	2019					2018					Change in			Change in
	MT		%			MT		%			MT			%
Modified Polyamide 66 (PA66)		19,154		20.8	%		18,624		17.1	%		530			2.8	%
Plastic Alloy		18,063		19.6	%		27,529		25.3	%		(9,466	)		(34.4	)%
Modified Polyamide 6 (PA6)		14,145		15.4	%		17,677		16.2	%		(3,532	)		(20.0	)%
Modified Polypropylene (PP)		23,598		25.7	%		38,316		35.3	%		(14,718	)		(38.4	)%
Modified Acrylonitrile Butadiene Styrene (ABS)		5,911		6.4	%		3,093		2.8	%		2,818			91.1	%
Polyoxymethylenes (POM)		580		0.6	%		869		0.8	%		(289	)		(33.3	)%
Polyphenylene Oxide (PPO)		1,189		1.3	%		440		0.4	%		749			170.2	%
Modified Polylactic acid (PLA)		1,681		1.8	%		2,284		2.1	%		(603	)		(26.4	)%
Polyethylene (PE)		3,913		4.3	%		—		0.0	%		3,913			N/A
Work in progress		3,767		4.1	%		—		0.0	%		3,767			N/A
Total Sales Volume		92,001		100	%		108,832		100	%		(16,831	)		(15.5	)%

30 

The Company continued to shift production mix from traditional lower-end products such as PP to higher-end products such as PA66 and PPO, primarily due to (i) greater growth potential of advanced modified plastics in luxury automobile models in China, (ii) the stronger demand as a result of promotion by the Chinese government for clean energy vehicles and (iii) better quality demand from and consumer recognition of higher-end cars made by automotive manufacturers from Chinese and Germany joint ventures, Sino-U.S. and Sino-Japanese joint ventures, which manufacturers tend to use more and higher-end modified plastics in quantity per vehicle in China.

The Company also sold high-priced work in progress with discounted price in domestic markets during the three-month period ended September 30, 2019 in order to accelerate inventory turnover and replenish operating funds.

Gross Profit and Gross Profit Margin

	Three-Month Period Ended September 30,						Change
(in millions, except percentage)	2019			2018			Amount		%
Gross Profit	$	60.1		$	47.2		$	12.9		27.3	%
Gross Profit Margin		16.1	%		15.9	%				0.2	%

Gross profit was US$60.1 million in the third quarter ended September 30, 2019, compared to US$47.2million in the same period of 2018. Our gross margin increased to 16.1% during the third quarter ended September 30, 2019 from 15.9% during the same quarter of 2018 primarily due to more sales of higher-end products during the quarter ended September 30, 2019 as compared to that of the prior year.

General and Administrative Expenses

	Three-Month Period Ended September 30,						Change
(in millions, except percentage)	2019			2018			Amount			%
General and Administrative Expenses	$	6.0		$	8.1		$	(2.1	)		(25.9	)%
as a percentage of revenues		1.6	%		2.7	%					(1.1	)%

General and administrative (G&A) expenses were US6.0 million for the quarter ended September 30, 2019 compared to US$8.1 million in the same period in 2018, representing a decrease of 25.9%, or US$2.1 million. The decrease was primarily due to our approach to optimize management structure and enhancing efficiency, leading to the decrease of (i) US$0.6 million in share based compensation incurred for external consulting services, (ii) US$0.6 million in salary and welfare, and (iii) US$0.9 million in travelling, transportation and miscellaneous expenses.

Research and Development Expenses

	Three-Month Period Ended September 30,						Change
(in millions, except percentage)	2019			2018			Amount			%
Research and Development Expenses	$	19.9		$	23.3		$	(3.4	)		(14.6	)%
as a percentage of revenues		5.3	%		7.8	%					(2.5	)%

Research and development (R&D) expenses were US$19.9 million during the quarter ended September 30, 2019 compared with US$23.3 million during the same period in 2018, representing a decrease of US$3.4 million, or 14.6%. This decrease was primarily due to (i) a decrease of US$2.5 million in raw materials consumption and (ii) a decrease of US$0.9 million in salary and welfare for R&D personnel.

31 

As of September 30, 2019, the number of ongoing research and development projects was 361. We expect to complete and commence to realize economic benefits from approximately 25% of the projects in the near term. The remaining projects are expected to be carried out for a longer period. The majority of the projects are in the field of modified plastics in automotive applications and the rest are in advanced fields such as ships, airplanes, high-speed rail, medical devices, etc.

Operating Income

Total operating income was US$33.8 million in the third quarter ended September 30, 2019 compared to US$13.0 million in the same period of 2018, representing an increase of 160.0% or US$20.8 million. This increase was primarily due to the higher gross profit, lower selling expenses, G&A expenses and R&D expenses.

Interest Income (Expenses)

	Three-Month Period Ended September 30,						Change
(in millions, except percentage)	2019			2018			Amount			%
Interest Income	$	0.3		$	0.3		$	—			—
Interest Expenses		(17.0	)		(13.4	)		(3.6	)		26.9	%
Net Interest Expenses	$	(16.7	)	$	(13.1	)	$	(3.6	)		27.5	%
as a percentage of revenues		(4.5	)%		(4.4	)%					(0.1	)%

Net interest expenses were US$16.7 million for the three-month period ended September 30, 2019, compared to US$13.1 million in the same period of 2018, representing an increase of 27.5% or US$3.6 million, primarily due to (i) the increase of average loan interest rate from 4.01% of the same period in 2018 to 4.70% for the three-month period ended September 30, 2019 and partially offset by (ii) the decrease of average short-term and long-term loan balance in the amount of US$915.6 million for the three-month period ended September 30, 2019 compared to US$936.2 million of the same period in 2018.

Income Taxes

	Three-Month Period Ended September 30,						Change
(in millions, except percentage)	2019			2018			Amount			%
Income before Income Taxes	$	22.6		$	5.5		$	17.1			310.9	%
Income tax (expense) benefit		(5.6	)		3.5			(9.1	)		(260.0	)%
Effective income tax rate		24.8	%		(65.1	)%					89.9	%

The effective income tax rates for the three-month periods ended September 30, 2019 and 2018 were 24.8% and -65.1%, respectively. The increase of effective income tax rate was primarily due to: i) the decrease of Sichuan Xinda’s profit before tax (“PBT”) percentage within the consolidating entities; and ii) the decrease of additional deduction of R&D expenses. The effective income tax rate for the three-month period ended September 30, 2019 differs from the PRC statutory income tax rate of 25% primarily due to Sichuan Xinda's preferential income tax rate, and 75% additional deduction of R&D expenses of the major PRC operating entities, partially offset by the increase of valuation allowance against deferred income tax assets of certain subsidiaries, which were at cumulative loss position.

Our PRC and Dubai subsidiaries have US$235.2 million of cash and cash equivalents and restricted cash as of September 30, 2019, which are planned to be indefinitely reinvested in the PRC and Dubai. Due to our policy of indefinitely reinvesting our earnings in our PRC business, we have not provided for deferred income tax liabilities related to PRC withholding income tax on undistributed earnings of our PRC subsidiaries. In addition, due to our policy of indefinitely reinvesting our earnings in Dubai, UAE, we have not provided for deferred income tax liabilities related to Dubai Xinda in Dubai, UAE, on undistributed earnings. The undistributed earnings as of December 31, 2017 were subject to the one-time repatriation tax under the Tax Act as a deemed repatriation of accumulated undistributed earnings from the foreign subsidiaries. However, the Company continues to plan to indefinitely reinvest its earnings in PRC and Dubai subsequent to the Tax Act.

32 

Net Income

As a result of the above factors, we had a net income of US$17.0 million in the third quarter of 2019 compared to a net income of US$9.0 million in the same quarter of 2018.

Nine-month period ended September 30, 2019 compared to nine-month period ended September 30, 2018

Revenues

Revenues were US$1,137.7 million in the nine-month period ended September 30, 2019, an increase of US$212.7 million, or 23.0%, compared with US$925.0 million in the same period of last year, as a combined result of: i) an increase of 40.7% in the average RMB selling price of our products; and partially offset by ii) a decrease of 8.1% in sales volume; and iii) a depreciation of RMB against US dollars by 6.9%, as compared with those of last year.

(i) Domestic market

For the nine-month period ended September 30, 2019, revenue from domestic market increased by US$168.5 million or 18.2% compared with that in the same period of last year, as a combined result of: i) an increase of 37.4% in the average RMB selling price of our products; and partially offset by ii) a decrease of 9.5% in sales volume; iii) a depreciation of RMB against US dollars by 6.9% as compared with those of last year.

According to the China Association of Automobile Manufacturers, automobile production and sales in China decreased by 11.4% and 10.3%, respectively, for the first nine months of 2019 as compared to the same period of 2018. The weakening in macroeconomic conditions since summer of 2018 continued to exacerbate automobile business environment, but thanks to our positive efforts to expand our customer bases and to meet their new requirements, the Company has achieved sales growth of 52.4% in Northeast China, 22.3% in North China, 22.2% in Central China, 2.8% in Southwest China, and 0.8% in Southern China, partially offset by the sales decrease of 5.3% in East China.

As for the RMB selling price, the increase of 37.4% was mainly due to: i) increased sales of new categories of higher-end products of PA66 and PA6 produced with high-priced raw materials with higher selling price in domestic markets; and ii) sales of high-priced work in progress in domestic market during the nine-month period ended September 30, 2019.

(ii) Overseas market

For the nine-month period ended September 30, 2019, revenues from overseas market were US$44.3 million as compared to US$152,871 of that in 2018.

After a successful trial production at our production base in Dubai in November 2018, the Company has established business relationships with new customers in UAE and India, and shipped products to the end users in Europe and Southeast Asia. We are optimistic about the prospect of our business expansion overseas.

33 

The following table summarizes the breakdown of revenues by categories in millions of US$:

(in millions, except percentage)	Revenues For the Nine-Month Period Ended September 30,
	2019					2018					Change in			Change in
	Amount		%			Amount		%			Amount			%
Modified Polyamide 66 (PA66)		296.4		26.1	%		242.7		26.2	%		53.7			22.1	%
Plastic Alloy		200.8		17.6	%		235.0		25.5	%		(34.2	)		(14.6	)%
Modified Polyamide 6 (PA6)		250.5		22.0	%		180.3		19.5	%		70.2			38.9	%
Modified Polypropylene (PP)		110.5		9.7	%		158.3		17.1	%		(47.8	)		(30.2	)%
Modified Acrylonitrile Butadiene Styrene (ABS)		40.7		3.6	%		23.1		2.5	%		17.6			76.2	%
Polyoxymethylenes (POM)		7.0		0.6	%		7.8		0.8	%		(0.8	)		(10.3	)%
Polyphenylene Oxide (PPO)		31.5		2.8	%		13.2		1.4	%		18.3			138.6	%
Modified Polylactic acid (PLA)		46.8		4.1	%		64.6		7.0	%		(17.8	)		(27.6	)%
Polyethylene (PE)		7.7		0.7	%		—		0.0	%		7.7			N/A
Work in progress		145.4		12.8	%		—		0.0	%		145.4			N/A
Raw Materials		0.4		0.0	%		0.0		0.0	%		0.4			N/A
Total Revenues		1,137.7		100	%		925.0		100	%		212.7			23.0	%

The following table summarizes the breakdown of metric tons (MT) by product mix:

(in MTs, except percentage)	Sales Volume For the Nine-Month Period Ended September 30,
	2019					2018					Change in			Change in
	MT		%			MT		%			MT			%
Modified Polyamide 66 (PA66)		51,964		17.7	%		59,381		18.6	%		(7,417	)		(12.5	)%
Plastic Alloy		58,924		20.2	%		80,224		25.2	%		(21,300	)		(26.6	)%
Modified Polyamide 6 (PA6)		51,975		17.7	%		57,823		18.1	%		(5,848	)		(10.1	)%
Modified Polypropylene (PP)		75,147		25.6	%		99,376		31.2	%		(24,229	)		(24.4	)%
Modified Acrylonitrile Butadiene Styrene (ABS)		19,557		6.7	%		10,800		3.4	%		8,757			81.1	%
Polyoxymethylenes (POM)		2,042		0.7	%		2,234		0.7	%		(192	)		(8.6	)%
Polyphenylene Oxide (PPO)		6,215		2.1	%		2,165		0.7	%		4,050			187.1	%
Modified Polylactic acid (PLA)		4,513		1.5	%		6,743		2.1	%		(2,230	)		(33.1	)%
Polyethylene (PE)		6,618		2.3	%		—		0.0	%		6,618			N/A
Work in progress		16,099		5.5	%		—		0.0	%		16,099			N/A
Total Sales Volume		293,054		100	%		318,746		100	%		(25,692	)		(8.1	)%

34 

The Company continued to shift production mix from traditional lower-end products such as PP to higher-end products such as PA66, PA6, and PPO, primarily due to (i) greater growth potential of advanced modified plastics in luxury automobile models in China, (ii) the stronger demand as a result of promotion by the Chinese government for clean energy vehicles and (iii) better quality demand from and consumer recognition of higher-end cars made by automotive manufacturers from Chinese and Germany joint ventures, Sino-U.S. and Sino-Japanese joint ventures, which manufacturers tend to use more and higher-end modified plastics in quantity per vehicle in China.

The Company also sold high-priced work in progress with discounted price in domestic markets during the nine-month period ended September 30, 2019 in order to accelerate inventory turnover and replenish operating funds.

Gross Profit and Gross Profit Margin

	Nine-month Period Ended September 30,						Change
(in millions, except percentage)	2019			2018			Amount		%
Gross Profit	$	175.7		$	157.2		$	18.5		11.8	%
Gross Profit Margin		15.4	%		17.0	%				(1.6	)%

Gross profit was US$175.7 million during the nine months ended September 30, 2019, as compared to US$157.2 million in the same period of 2018. Our gross margin decreased to 15.4% during the nine-month period ended September 30, 2019 from 17.0% during the same period of 2018 primarily due to the adopted discounted-priced strategy on sales of work in progress in domestic market in order to accelerate inventory turnover and replenish operating funds for the nine-month period ended September 30, 2019.

General and Administrative Expenses

	Nine-month Period Ended September 30,						Change
(in millions, except percentage)	2019			2018			Amount			%
General and Administrative Expenses	$	20.5		$	28.3		$	(7.8	)		(27.6	)%
as a percentage of revenues		1.8	%		3.1	%					(1.3	)%

General and administrative (G&A) expenses were US$20.5 million in the nine-month period ended September 30, 2019 compared to US$28.3million in the same period in 2018, representing a decrease of 27.6%, or US$7.8 million. The decrease was primarily due to our approach to optimize management structure and enhancing efficiency, leading to the decrease of (i) US$3.4 million in salary and welfare, (ii) US$3.3 million in stock based compensation incurred for external consulting services, (iii) US$0.7 million in travelling and transportation, and (iv) US$0.4 million in miscellaneous expenses.

Research and Development Expenses

	Nine-month Period Ended September 30,						Change
(in millions, except percentage)	2019			2018			Amount		%
Research and Development Expenses	$	39.5		$	33.7		$	5.8		17.2	%
as a percentage of revenues		3.5	%		3.6	%				(0.1	)%

Research and development (R&D) expenses were US$39.5 million during for the nine-month period ended September 30, 2019 compared with US$33.7 million during the same period in 2018, an increase of US$5.8 million, or 17.2%. The increase was primarily due to (i) elevated R&D activities to meet the new higher specification requirements from potential customers, especially overseas; and (ii) increased efforts directed towards applications in new electrical equipment and electronics, alternative energy applications, power devices, aviation equipment and ocean engineering, in addition to other new products primarily for advanced industrialized applications in the automobile sector and in new verticals such as ships, airplanes, high-speed rail, 3D printing materials, biodegradable plastics, and medical devices.

35 

As of September 30, 2019, the number of ongoing research and development projects was 361. We expect to complete and commence to realize economic benefits from approximately 25% of the projects in the near term. The remaining projects are expected to be carried out for a longer period. The majority of the projects are in the field of modified plastics in automotive applications and the rest are in advanced fields such as ships, airplanes, high-speed rail, medical devices, etc.

Operating Income

Total operating income was US$114.7 million for the nine-month period ended September 30, 2019 compared to US$87.9 million in the same period of 2018, representing an increase of 30.5% or US$26.8 million. This increase was primarily due to the increased gross profit, lower selling expenses and G&A expenses and partially offset by higher research and development expenses.

Interest Income (Expenses)

	Nine-Month Period Ended September 30,						Change
(in millions, except percentage)	2019			2018			Amount			%
Interest Income	$	1.2		$	3.6		$	(2.4	)		(66.7	)%
Interest Expenses		(46.6	)		(37.6	)		(9.0	)		23.9	%
Net Interest Expenses	$	(45.4	)	$	(34.0	)	$	(11.4	)		33.5	%
as a percentage of revenues		4.0	%		3.7	%					0.3	%

Net interest expenses were US$45.4 million for the nine-month period ended September 30, 2019, compared to US$34.0 million in the same period of 2018, representing an increase of 33.5% or US$11.4 million, primarily due to (i) the increase of the average short-term and long-term loan balance in the amount of US$884.7 million for the nine-month period ended September 30, 2019, compared to US$863.4 million of the same period in 2018; (ii) the increase of interest expense resulting from the average loan interest rate increased to 5.2% for the nine-month period ended September 30, 2019 compared to 4.6% of the same period in 2018; (iii) the decrease of interest income resulting from the average interest rate decreased to 0.7% for the nine-month period ended September 30, 2019 compared to 1.1% of the same period in 2018, and (iv) the decrease of average deposit balance in the amount of US$244.0 million for the nine-month period ended September 30, 2019 compared to US$447.7 million for the same period in 2018.

Income Taxes

	Nine-Month Period Ended September 30,						Change
(in millions, except percentage)	2019			2018			Amount			%
Income before Income Taxes	$	80.0		$	63.5		$	16.5			26.0	%
Income tax expense		(11.9	)		(8.2	)		(3.7	)		45.1	%
Effective income tax rate		14.8	%		12.9	%					1.9	%

The effective income tax rates for the nine-month periods ended September 30, 2019 and 2018 were 14.8% and 12.9%, respectively. The effective income tax rate increased from 12.9% for the nine-month period ended September 30, 2018 to 14.8% for the nine-month period ended September 30, 2019, primarily due to the decrease of Sichuan Xinda’s profit before tax (“PBT”) percentage within the consolidating entities. The effective income tax rate for the nine-month period ended September 30, 2019 differs from the PRC statutory income tax rate of 25% primarily due to Sichuan Xinda's preferential income tax rate, the reversal of the unrecognized tax benefits accrued in year 2013 and 75% additional deduction of R&D expenses of the major PRC operating entities.

36 

Net Income

As a result of the above factors, we had a net income of US$68.1 million for the nine-month period ended September 30, 2019 compared to net income of US$55.3 million in the same period of 2018.

Selected Balance Sheet Data as of September 30, 2019 and December 31, 2018:

	September 30, 2019		December 31, 2018		Change
(in millions, except percentage)					Amount			%
Cash and cash equivalents		10.5		41.3		(30.8	)		(74.6	)%
Restricted cash		224.6		325.7		(101.1	)		(31.0	)%
Accounts receivable, net of allowance for doubtful accounts		326.8		294.7		32.1			10.9	%
Inventories		699.0		620.0		79.0			12.7	%
Prepaid expenses and other current assets		234.6		132.2		102.4			77.5	%
Property, plant and equipment, net		798.1		775.9		22.2			2.9	%
Land use rights, net		28.5		29.8		(1.3	)		(4.4	)%
Long-term prepayments to equipment and construction suppliers		436.3		530.6		(94.3	)		(17.8	)%
Operating right of use assets, net		15.6		—		15.6			N/A
Other non-current assets		0.8		3.2		(2.4	)		(75.0	)%
Total assets		2,774.8		2,753.5		21.3			0.8	%
Short-term bank loans, including current portion of long-term bank loans		619.5		729.7		(110.2	)		(15.1	)%
Bills payable		431.3		618.2		(186.9	)		(30.2	)%
Accounts payable		205.4		85.0		120.4			141.6	%
Amounts due to related parties		28.4		18.4		10.0			54.3	%
Income taxes payable, including noncurrent portion		103.1		99.2		3.9			3.9	%
Accrued expenses and other current liabilities		98.5		126.9		(28.4	)		(22.4	)%
Long-term bank loans, excluding current portion		276.5		111.8		164.7			147.3	%
Deferred income		93.2		99.6		(6.4	)		(6.4	)%
Operating lease liabilities, non-current		14.5		—		14.5			N/A
Redeemable Series D convertible preferred stock		—		97.6		(97.6	)		(100.0	)%
Stockholders' equity		889.8		748.9		140.9			18.8	%

Our financial condition continued to improve as measured by an increase of 18.8% in stockholders' equity as of September 30, 2019 as compared to that of December 31, 2018. Cash, cash equivalents and restricted cash decreased by 35.9% or US$131.9 million due to the operating cash outflows. Inventories increased by 12.7% as a result of more purchases of the raw materials and the Company's strategy to stock up the finished goods for the upcoming orders. Prepaid expenses and other current assets increased by 77.5% or US$102.4 million because (i) advances to suppliers for purchasing raw materials increased by US$69.2 million; (ii) other receivables increased by US$42.8 million; (iii) other prepaid expenses decreased by US$9.6 million, which mainly included prepaid miscellaneous service fee and staff advance, and value added taxes receivables. The aggregate short-term and long-term bank loans increased by 6.5% due to using the line of credits to support operating and investing activities in HLJ Xinda Group and Sichuan Xinda. We define the manageable debt level as the sum of aggregate short-term and long-term loans over total assets.

LIQUIDITY AND CAPITAL RESOURCES

Historically, our primary uses of cash have been to finance working capital needs and capital expenditures for new production lines. We have financed these requirements primarily from cash generated from operations, bank borrowings and the issuance of our convertible preferred stocks and debt financings. As of September 30, 2019 and December 31, 2018, we had US$235.1 million and US$367.0 million, respectively, in cash and restricted cash, which were primarily deposited with banks in China (including Hong Kong and Macau SAR), UAE and U.S. As of September 30, 2019, we had US$619.5 million outstanding short-term bank loans (including the current portion of long-term bank loans), including US$310.2 million unsecured loan and US$63.6 million loans secured by accounts receivable, US$59.1 million loans secured by restricted cash, and US$186.6 long-term bank loans that due in one year. We also had US$276.5 million long-term loans (excluding the current portion), including US$70.7 million loans secured by right of equity income, US$1.5 million loans secured by an undated security cheque, and US$204.3 million unsecured loans. Short-term and long-term bank loans in total bear a weighted average interest rate of 5.0% per annum and do not contain any renewal terms. 

37 

A summary of lines of credit for the nine-month period ended September 30, 2019 and the remaining line of credit as of September 30, 2019 is as below: 

(in millions)	September 30, 2019
	Lines of Credit, Obtained					Remaining Available
Name of Financial Institution	Date of Approval	RMB		USD		USD
Bank of China	July 28, 2017		294.9		41.7		—
Bank of Longjiang, Heilongjiang	September 12, 2017		945.0		133.6		—
Industrial & Commercial Bank of China (ICBC)	September 5, 2018		1,300.0		183.8		85.8
Agricultural Bank of China	September 3, 2018		200.0		28.3		—
Postal Savings Bank of China	April 19, 2018		400.0		56.5		42.3
Sichuan Tianfu Bank	March 18, 2019		50.0		7.1		—
Nanchong Shuntou Development Group Ltc.	January 30,2018		430.0		60.8		—
Standard Chartered Bank	August 22, 2016		959.1		135.5		0.5
Nanchong Rural Commercial Bank	January 30, 2018		250.0		35.3		—
Harbin Rural Commercial Bank	July 31, 2018		350.0		49.5		—
Jianxin Financial Asset Investment Co., Ltd.	March 29, 2019		110.0		15.6		—
National Bank of Umm Al Qaiwain	September 26, 2018		3.1		0.4		—
Subtotal (credit term<=1 year)			5,292.1		748.1		128.6
Bank of China	July 28, 2016		275.0		38.9		38.9
Bank of Longjiang, Heilongjiang	November 28, 2017		1,464.6		207.1		2.8
National Bank of Umm Al Qaiwain	September 26, 2018		10.7		1.5		—
China Construction Bank	March 31, 2019		500.0		70.7		—
Subtotal (credit term>1 year)			2,250.3		318.2		41.7
Total			7,542.4		1,066.3		170.3

As of September 30, 2019, we have contractual obligations to (i) lease commitments in the amount of US$28.0 million, including US$1.4 million due in one year; (ii) equipment acquisition and facility construction in the amount of US$272.2 million; and (iii) long-term bank loan in the amount of US$507.6 million (including principals and interests).

We expect that we will be able to meet our needs to fund operations, capital expenditures and other commitments in the next 12 months primarily with our cash and cash equivalents, operating cash flows and bank borrowings. 

We may, however, require additional cash resources due to changes in business conditions or other future developments. If these sources are insufficient to satisfy our cash requirements, we may seek to sell additional equity or debt securities or obtain a credit facility. The sale of additional equity or equity-linked securities could result in additional dilution to stockholders. The incurrence of indebtedness would result in increased debt service obligations and could result in operating and financial covenants that would restrict operations. Financing may not be available in amounts or on terms acceptable to us, or at all.

The following table sets forth a summary of our cash flows for the periods indicated.

	Nine-month Period Ended September 30,
(in millions US$)	2019			2018
Net cash (used in) provided by operating activities		(183.2	)		115.5
Net cash used in investing activities		(31.1	)		(5.9	)
Net cash provided by (used in) financing activities		89.4			(22.8	)
Effect of foreign currency exchange rate changes on cash, cash equivalents and restricted cash		(7.0	)		(19.4	)
Net (decrease) increase in cash, cash equivalents, and restricted cash		(131.9	)		67.4
Cash, cash equivalents, and restricted cash at the beginning of period		367.0			320.1
Cash, cash equivalents, and restricted cash at the end of period		235.1			387.5

38 

Operating Activities

Net cash used in operating activities was US$183.2 million for the nine-month period ended September 30, 2019, as compared to US$115.5 million provided in operating activities for the nine-month period ended September 30, 2018, due to (i) the increase of approximately US$325.4 million in cash operating payments, including raw material purchases, rental and personnel costs, (ii) the increase of US$49.5 VAT payments, (iii) the increase of US$11.5 million interest payments, (iv) the decrease of US$3.6 million interest income and partially offset by (v) the increase of approximately US$79.6 million in cash collected from our customers for the nine-month period ended September 30, 2019, (vi) the decrease of US$8.9 income tax payments, (vii) the decrease of US$1.6 million option contract loss, and (viii) the increase of US$1.2 million received from government grant.

Investing Activities

Net cash used in the investing activities was US$31.1 million for the nine-month period ended September 30, 2019 as compared to US$5.9 million for the same period of last year, due to (i) the decrease of US$517.7 million proceeds from maturity of time deposits, (ii) the decrease of US$121.4 million refund of deposit from an equipment supplier, (iii) the decrease of US$15.6 million refund of deposits for acquisition of equity, (iv) the decrease of US$10.2 million government grants related to the construction projects, and partially offset by (v) the decrease of US$376.6 million purchase of property, plant and equipment, (vi) the decrease of US$236.4 million purchase of time deposits, (vii) the increase of US$15.8 million proceeds from refund of prepayment for building purchase, (viii) the increase of US$7.3 million proceeds from sales of a subsidiary and (ix) the decrease of US$3.6 million deposits for acquisition of equity.

Financing Activities

Net cash provided by the financing activities was US$89.4 million for the nine-month period ended September 30, 2019, as compared to US$22.8 million used in financing activities for the same period of last year, primarily as a result of (i) the increase of the proceeds of US$927.2 million from bank borrowings for the nine-month period ended September 30, 2019, (ii) the increase of US$65.7 million proceeds of interest-free advances from related parties, partially offset by (iii) the increase of US$812.2 million repayments of bank borrowings, and (iv) the increase of US$68.5 million repayments of interest-free advances to related parties.

As of September 30, 2019, our cash, cash equivalents and restricted cash balance was US$235.1 million, as compared to US$367.0 million at December 31, 2018.

Days Sales Outstanding ("DSO") has decreased from 84 days for the year ended December 31, 2018 to 74 days for the nine-month period ended September 30, 2019 as a result of faster accounts receivable collection from the domestic customers.

It takes shorter to collect from our customers. We believe that our DSO is well below industry average Industry Standard Customer and Supplier Payment Terms (days) as below:

	Nine-month period ended September 30, 2019	Year ended December 31, 2018
Customer Payment Term	Payment in advance/up to 90 days	Payment in advance/up to 90 days
Supplier Payment Term	Payment in advance/up to 90 days	Payment in advance/up to 90 days

Inventory turnover days have increased from 178 days for the year ended December 31, 2018 to 185 days for the nine-month period ended September 30, 2019. Turnover days of payables have decreased from 53 days for the year ended December 31, 2018 to 41 days for the nine-month period ended September 30, 2019.

Based on past performance and current expectations, we believe our cash and cash equivalents provided by operating activities and financing activities will satisfy our working capital needs, capital expenditures and other liquidity requirements associated with our operations for at least the next 12 months.

The majority of the Company's revenues and expenses were denominated primarily in Renminbi ("RMB"), the currency of the People's Republic of China. There is no assurance that exchange rates between the RMB and the U.S. Dollar will remain stable.  Inflation has not had a material impact on the Company's business.

39 

COMMITMENTS AND CONTINGENCIES

Contractual Obligations

Our contractual obligations as of September 30, 2019 are as follows:

Contractual obligations	Total		Payment due less than 1 year		1 – 3 years		3-5 years		More than 5 years
Purchase of plant, equipment and construction in progress (2)(3)(4)(5)		272,209,800		271,873,876		335,924		—		—
Long-term bank loans (1)		507,630,568		187,796,652		160,295,514		88,453,569		71,084,833
Total		779,840,368		459,670,528		160,631,438		88,453,569		71,084,833

(1)  Includes interest of US$44.5 million accrued at the interest rate under the loan agreements. For borrowings with a floating rate, the most recent rate as of September 30, 2019 was applied.

(2) Sichuan plant construction and equipment purchase.

On March 8, 2013, Xinda Holding (HK) entered into an investment agreement with Shunqing Government, pursuant to which Xinda Holding (HK) will invest RMB1,800 million (equivalent to US$254.5 million) in property, plant and equipment and approximately RMB600 million (equivalent to US$84.8 million) in working capital, for the construction of Sichuan plant.  As of September 30, 2019, the Company has a remaining commitment of RMB54.8 million (equivalent to US$7.7 million) mainly for facility construction.

In September 2016, Sichuan Xinda entered into equipment purchase contracts with Hailezi for a consideration of RMB17.0 million (equivalent to US$2.4 million) to purchase storage facility and testing equipment. Afterward, Sichuan Xinda cancelled two contracts with Hailezi for a consideration of RMB1.6 million (equivalent to US$0.2 million). As of September 30, 2019, Sichuan Xinda prepaid RMB6.0 million (equivalent to US$0.9 million) and has a remaining commitment of RMB9.4 million (equivalent to US$1.3 million).

On October 20, 2016, Sichuan Xinda entered into an equipment purchase contract with Peaceful Treasure Limited ("Peaceful") for a total consideration of RMB89.8 million (equivalent to US$12.7 million) to purchase certain production and testing equipment. As of September 30, 2019, the Company has a commitment of RMB55.9 million (equivalent to US$7.9 million).

On November 15, 2016, Sichuan Xinda entered into decoration contract with Beijin Construction  to perform indoor and outdoor decoration work for a consideration of RMB237.6 million (equivalent to US$33.6 million).  On February 20, 2017, Sichuan Xinda entered into another decoration contract with Beijin Construction to perform outdoor decoration work for a consideration of RMB2.9 million (equivalent to US$0.4 million). On June 10, 2017, Sichuan Xinda entered into another decoration contract with Beijin Construction to perform ground decoration work for a consideration of RMB23.8 million (equivalent to US$3.4 million). As of September 30, 2019, Sichuan Xinda prepaid RMB120.9 million (equivalent to US$17.1 million) of which RMB74.0 million (equivalent to US$10.4 million) was transferred to construction in progress and has a remaining commitment of RMB143.4 million (equivalent to US$20.3 million).

In connection with the Nanchong Project mentioned in Note 6 (i), Sichuan Xinda entered into equipment purchase contracts with Hailezi for a consideration of RMB2,242.8 million (equivalent to US$317.1 million) to purchase production equipment and testing equipment in March 2017.  By the end of June 2017, Sichuan Xinda expected to launch an integrated ERP system, which resulted in the equipment to be purchased under the original contracts with Hailezi not meeting the production requirements. Thus the original contracts have been terminated with the amount of RMB2,222.9 million (equivalent to US$314.3 million), and Hailezi agreed to refund the prepayment in the amount of RMB1,704.9 million (equivalent to US$241.0 million) by the end of March 2018, out of the total prepayment made by Sichuan Xinda of RMB1,722.9 million (equivalent to US$243.5 million). As of June 30, 2018, Hailezi has refunded the prepayment in the amount of RMB1,704.9 million (equivalent to US$241.0 million). As of September 30, 2019, Sichuan Xinda prepaid RMB18.0 million (equivalent to US$2.5 million) and has a remaining commitment of RMB1.9 million (equivalent to US$0.3 million).

40 

In connection with the Nanchong Project, on June 21, 2018, Sichuan Xinda entered into another equipment purchase contracts with Hailezi to purchase production equipment and testing equipment for a consideration of RMB1,900.1 million (equivalent to US$268.7 million). Pursuant to the contracts with Hailezi, Sichuan Xinda have prepaid RMB1,710.1 million (equivalent to US$241.8 million) at the end of September 30, 2019, and has a remaining commitment of RMB190.0 million (equivalent to US$26.9 million).

(3)  Heilongjiang plant construction and equipment purchase

In connection with the equipment purchase contracts with Hailezi signed on September 26, 2016 and February 28, 2017 mentioned in Note 6 (i), HLJ Xinda Group has a remaining commitment of RMB30.2 million (equivalent to US$4.3 million) as of September 30, 2019.

In connection with the "HLJ Project" mentioned in Note 6 (i), pursuant to the three investment agreements, the project total capital expenditure will be RMB4,015.0 million (equivalent to be US$567.7 million), among which the investment in fixed assets shall be no less than RMB3,295.0 million (equivalent to US$465.9 million) in total. Pursuant to the contracts with Hailezi signed in November 2017 mentioned in Note 6 (i), HLJ Xinda Group has a remaining commitment of RMB18.8 million (equivalent to US$2.7 million) as of September 30, 2019.

In connection with the HLJ project, on June 25, 2018, HLJ Xinda Group entered into another equipment purchase contract with Hailezi to purchase production equipment, which will be used for 300,000 metric tons of biological based composite material, located in Harbin, for a consideration of RMB749.8 million (equivalent to US$106.0 million). Pursuant to the contract with Hailezi, HLJ Xinda Group has prepaid RMB300.7 million (equivalent to US$42.5 million) as of September 30, 2019, and has a remaining commitment of RMB449.1 million (equivalent to US$63.5 million).

In connection with the HLJ Project, on July 12, 2018, Heilongjiang Xinda Enterprise Group Company Limited (“HLJ Xinda Group”) entered into an equipment purchase contract with Hailezi to purchase production equipment, which will be used for 300,000 metric tons of biological based composite material, located in Harbin, for a consideration of RMB1,157.0 million (equivalent to US$163.6 million). Pursuant to the contract with Hailezi, HLJ Xinda has prepaid RMB240.8 million (equivalent to US$34.0 million) as of September 30, 2019, and has a remaining commitment of RMB916.2 million (equivalent to US$129.6 million).

(4)  Dubai plant construction and equipment

On April 28, 2015, Dubai Xinda entered into a warehouse construction contract with Falcon Red Eye Contracting Co. L.L.C. for a total consideration of AED6.7 million (equivalent to US$1.8 million). As of September 30, 2019, the Company has a remaining commitment of AED1.6 million (equivalent to US$0.4 million).

On May 31, 2019, Dubai Xinda entered into a warehouse construction contract with Peaceful for a total consideration of US$18.8 million. As of September 30, 2019, the Company has a remaining commitment of US$6.7 million.

(5)   Xinda CI (Beijing) office building decoration

On March 30, 2017, Xinda CI (Beijing) Investment Holding Co., Ltd. ("Xinda Beijing Investment") entered into a decoration contract with Beijing Fangyuan Decoration Engineering Co., Ltd. for a total consideration of RMB5.8 million (equivalent to US$0.8 million) to decorate office building. As of December 31, 2018, the decoration work in the amount of RMB2.0 million (equivalent to US$0.3 million) was recorded in construction in progress. As of September 30, 2019, the Company has a remaining commitment of RMB3.8 million (equivalent to US$0.5 million).

On June 9, 2017, Xinda CI (Beijing) entered into a decoration contract with Beijing Zhonghongwufang Stone Co., Ltd for a total consideration of RMB1.2 million (equivalent to US$0.2 million) to decorate office building. As of December 31, 2018, the decoration work in the amount of RMB0.6 million (equivalent to US$0.1 million) was recorded in construction in progress. As of September 30, 2019, the Company has a remaining commitment of RMB0.6 million (equivalent to US$0.1 million).

41 

 Off-Balance Sheet Arrangements

The Company and Mr. Jie Han have entered into two off–balance sheet commitments that provide guarantees for two one-year loans in the amounts of RMB500.0 million (equivalent to US$70.7 million) and RMB800.0 million (equivalent to US$113.1 million) obtained by Heilongjiang Xinda Enterprise Group Shanghai New Materials Sales Company Limited, an unrelated party and a raw material provider, on December 25, 2018 and April 15, 2019, respectively, from Longjiang Bank Co., Ltd. Harbin Pingfang branch (“Longjiang Bank”). The Company’s pledged obligations primarily consist of repayments of loan principle and interests if Shanghai Sales defaults on the loans when due.

Our management estimates that, in the event that Shanghai Sales defaults on the loans, the Company’s material loss contingency would be RMB1.379 billion (equivalent to US$195.0 million), including estimated interest expenses of RMB79.2 million (equivalent to US$11.2 million) as of September 30, 2019.

As of today, our management believes that the potential material loss contingency is not probable immediate or in the near future.

Item 3. Quantitative and Qualitative Disclosures about Market Risks

Interest Rate Risk

We are exposed to interest rate risk primarily with respect to our short-term loans, long-term bank loans, notes payable, cash and cash equivalents, restricted cash and time deposits. Although the interest rates, which are based on the banks' prime rates are fixed for the terms of the loans and deposits, increase in interest rates will increase our interest expense.

A hypothetical 1.0% increase in the annual interest rate for all of our credit facilities under which we had outstanding borrowings as of September 30, 2019 would decrease income before income taxes by approximately US$6.7 million for the nine-month period ended September 30, 2019. Management monitors the banks' prime rates in conjunction with our cash requirements to determine the appropriate level of debt balances relative to other sources of funds. We have not entered into any hedging transactions in an effort to reduce our exposure to interest rate risk.

Foreign Currency Exchange Rates

The majority of our revenues are collected in and our expenses are paid in RMB. We face foreign currency rate translation risks when our results are translated to U.S. dollars.

The RMB was relatively stable against the U.S. dollar at approximately 8.28 RMB to the US$1.00 until July 21, 2005 when the Chinese currency regime was altered resulting in a 2.1% revaluation versus the U.S. dollar. From July 21, 2005 to June 30, 2010, the RMB exchange rate was no longer linked to the U.S. dollar but rather to a basket of currencies with a 0.3% margin of fluctuation resulting in further appreciation of the RMB against the U.S. dollar. Since June 30, 2009, the exchange rate had remained stable at 6.8307 RMB to 1.00 U.S. dollar until June 30, 2010 when the People's Bank of China allowed a further appreciation of the RMB by 0.43% to 6.798 RMB to 1.00 U.S. dollar. The People's Bank of China allowed the RMB and U.S. dollar exchange rate to fluctuate within 1% on April 16, 2012 and 2% on March 17, 2014, respectively. Affected by the current trade conflicts between China and US, on August 5, 2019, the RMB exchange rate against the U.S. dollar depreciated to break through 7.00 RMB to 1.00 U.S. dollar. On September 30, 2019, the RMB traded at 7.0729 RMB to 1.00 U.S. dollar.

There remains international pressure on the Chinese government to adopt an even more flexible currency policy and the exchange rate of RMB is subject to changes in China's government policies which are, to a large extent, dependent on the economic and political development both internationally and locally and the demand and supply of RMB in the domestic market. There can be no assurance that such exchange rate will continue to remain stable in the future amongst the volatility of currencies, globalization and the unstable economies in recent years. Since (i) our revenues and net income of our PRC operating entities are denominated in RMB, and (ii) the payment of dividends, if any, will be in U.S. dollars, any decrease in the value of RMB against U.S. dollars would adversely affect the value of the shares and dividends payable to shareholders, in U.S. dollars.

42 

Item 4. Controls and Procedures

(a) Evaluation of Disclosure Controls and Procedures

The Company's management has evaluated, under the supervision and with the participation of the Company's Chief Executive Officer and Chief Financial Officer, the effectiveness of the design and operations of the Company's disclosure controls and procedures (as defined in Securities Exchange Act Rule 13a-15(e)), as of the end of the period covered by this report. Based on that evaluation, the Company's Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were not effective because of material weakness in our internal control over financial reporting as disclosed in our Annual Report on Form 10-K for the fiscal year ended December 31, 2018.

Notwithstanding management's assessment that our internal control over financial reporting was ineffective as of September 30, 2019. We believe that our unaudited condensed consolidated financial statements included in this Quarterly Report present fairly our financial position, results of operations and cash flows for the three-month period ended September 30, 2019 in all material respects.

(b) Changes in internal controls.

During the nine-month period ended September 30, 2019, our efforts to improve our internal controls over financial reporting (1) hiring additional qualified financial staff; (2) adopting procedures to evaluate and assess performance of directors, officers and employees of the Company, (3) internal meetings, discussions, trainings and seminars periodically to review and improve our internal control procedures; We plan to improve on the above-referenced weakness by the end of the fiscal year ending December 31, 2019.

Other than the foregoing, there has been no other changes in our internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during our nine-month period ended September 30, 2019 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

We are subject to various legal proceedings and claims that arise in the ordinary course of business. Management currently believes that the resolution of these matters will not have a material adverse impact on our future results of operations or financial position.

Item 1A. Risk Factors

"Part I. Item 1A. Risk Factors" in our Annual Report on Form 10-K for the fiscal year ended December 31, 2018 includes a detailed discussion of risks and uncertainties which could adversely affect our future results.  We operate in a changing environment that involves numerous known and unknown risks and uncertainties that could materially affect our operations. The risks, uncertainties and other factors set forth in our Annual Report on Form 10-K may cause our actual results, performances and achievements to be materially different from those expressed or implied by our forward-looking statements. If any of these risks or events occurs, our business, financial condition or results of operations may be adversely affected. During the nine-month period ended September 30, 2019, there have been no material changes to the Risk Factors disclosed in “Part I Item 1A. Risk Factors” of our Annual Report on Form 10-K for the fiscal year ended December 31, 2018.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

None.

Item 3. Defaults upon Senior Securities

None.

43 

Item 4. Mine Safety Disclosures

Not applicable.

Item 5.  Other Information

None.

Item 6.  Exhibits

The documents listed in the Exhibit Index of this Quarterly Report on Form 10-Q are herein incorporated by reference or are filed with the Quarterly Report on Form 10-Q, in each case as indicated therein.

44 

Exhibit Index

Exhibit No.	Document Description	Incorporated by Reference Herein from the Following Filing
31.1	Certification of the Chief Executive Officer pursuant to Rule 13A-14(A)/15D-14(A) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	Filed herewith
31.2	Certification of the Chief Financial Officer pursuant to Rule 13A-14(A)/15D-14(A) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	Filed herewith
32.1	Certification of the Chief Executive Officer pursuant to 18 U.S.C. 1350 (Section 906 of the Sarbanes-Oxley Act of 2002).	Filed herewith
32.2	Certification of the Chief Financial Officer pursuant to 18 U.S.C. 1350 (Section 906 of the Sarbanes-Oxley Act of 2002).	Filed herewith
101	Interactive Data Files Pursuant to Rule 405 of Regulation S-T	Filed herewith

45 

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	China XD Plastics Company Limited
Date: November 14, 2019	By:	/s/ Jie Han
		Name: Jie Han
		Title: Chief Executive Officer (Principal Executive Officer)

Date: November 14, 2019	By:	/s/ Taylor Zhang
		Name: Taylor Zhang
		Title: Chief Financial Officer

46 

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Jie Han, the Chief Executive Officer of the registrant, certify that:

(1) I have reviewed this Quarterly Report on Form 10-Q of China XD Plastics Company Limited, for the period ended September 30, 2019.

(2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

(3) Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

(4) The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

(5) The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 14, 2019

/s/ Jie Han
Name:	Jie Han
Title:	Chief Executive Officer (Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Taylor Zhang, the Chief Financial Officer of the registrant, certify that:

(1) I have reviewed this Quarterly Report on Form 10-Q of China XD Plastics Company Limited, for the period ended September 30, 2019.

(2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

(3) Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

(4) The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

(5) The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 14, 2019

/s/ Taylor Zhang
Name:	Taylor Zhang
Title:	Chief Financial Officer  (Principal Financial and Accounting Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION

The undersigned, Jie Han, the Chief Executive Officer of China XD Plastics Company Limited (the “Company”) hereby certifies that, to his knowledge, the Company’s Quarterly Report on Form 10-Q for the period ended September 30, 2019 (the “Report”), as filed with the Securities and Exchange Commission on the date hereof, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

November 14, 2019
	By:	/s/ Jie Han
		Jie Han
		Chief ExecutiveOfficer  (Principal Executive Officer)

EX-32.2

Exhibit 32.2

CERTIFICATION

The undersigned, Taylor Zhang, the Chief Financial Officer of China XD Plastics Company Limited (the “Company”) hereby certifies that, to his knowledge, the Company’s Quarterly Report on Form 10-Q for the period ended September 30, 2019 (the “Report”), as filed with the Securities and Exchange Commission on the date hereof, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

November 14, 2019
	By:	/s/ Taylor Zhang
		Taylor Zhang
		Chief Financial Officer  (Principal Financial and Accounting Officer)

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Commitments and contingencies

9 Months Ended

Sep. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and contingencies

Note 18 - Commitments and contingencies

(1) Sichuan plant construction and equipment purchase.

On March 8, 2013, Xinda Holding (HK) entered into an investment agreement with Shunqing Government, pursuant to which Xinda Holding (HK) will invest RMB1,800 million (equivalent to US$254.5 million) in property, plant and equipment and approximately RMB600 million (equivalent to US$84.8 million) in working capital, for the construction of Sichuan plant.  As of September 30, 2019, the Company has a remaining commitment of RMB54.8 million (equivalent to US$7.7 million) mainly for facility construction.

In September 2016, Sichuan Xinda entered into equipment purchase contracts with Hailezi for a consideration of RMB17.0 million (equivalent to US$2.4 million) to purchase storage facility and testing equipment. Afterward, Sichuan Xinda cancelled two contracts with Hailezi for a consideration of RMB1.6 million (equivalent to US$0.2 million). As of September 30, 2019, Sichuan Xinda prepaid RMB6.0 million (equivalent to US$0.9 million) and has a remaining commitment of RMB9.4 million (equivalent to US$1.3 million).

On October 20, 2016, Sichuan Xinda entered into an equipment purchase contract with Peaceful Treasure Limited ("Peaceful") for a total consideration of RMB89.8 million (equivalent to US$12.7 million) to purchase certain production and testing equipment. As of September 30, 2019, the Company has a commitment of RMB55.9 million (equivalent to US$7.9 million).

On November 15, 2016, Sichuan Xinda entered into decoration contract with Beijin Construction  to perform indoor and outdoor decoration work for a consideration of RMB237.6 million (equivalent to US$33.6 million).  On February 20, 2017, Sichuan Xinda entered into another decoration contract with Beijin Construction to perform outdoor decoration work for a consideration of RMB2.9 million (equivalent to US$0.4 million). On June 10, 2017, Sichuan Xinda entered into another decoration contract with Beijin Construction to perform ground decoration work for a consideration of RMB23.8 million (equivalent to US$3.4 million). As of September 30, 2019, Sichuan Xinda prepaid RMB120.9 million (equivalent to US$17.1 million) of which RMB74.0 million (equivalent to US$10.4 million) was transferred to construction in progress and has a remaining commitment of RMB143.4 million (equivalent to US$20.3 million).

In connection with the Nanchong Project mentioned in Note 6 (i), Sichuan Xinda entered into equipment purchase contracts with Hailezi for a consideration of RMB2,242.8 million (equivalent to US$317.1 million) to purchase production equipment and testing equipment in March 2017.  By the end of June 2017, Sichuan Xinda expected to launch an integrated ERP system, which resulted in the equipment to be purchased under the original contracts with Hailezi not meeting the production requirements. Thus the original contracts have been terminated with the amount of RMB2,222.9 million (equivalent to US$314.3 million), and Hailezi agreed to refund the prepayment in the amount of RMB1,704.9 million (equivalent to US$241.0 million) by the end of March 2018, out of the total prepayment made by Sichuan Xinda of RMB1,722.9 million (equivalent to US$243.5 million). As of June 30, 2018, Hailezi has refunded the prepayment in the amount of RMB1,704.9 million (equivalent to US$241.0 million). As of September 30, 2019, Sichuan Xinda prepaid RMB18.0 million (equivalent to US$2.5 million) and has a remaining commitment of RMB1.9 million (equivalent to US$0.3 million).

In connection with the Nanchong Project, on June 21, 2018, Sichuan Xinda entered into another equipment purchase contracts with Hailezi to purchase production equipment and testing equipment for a consideration of RMB1,900.1 million (equivalent to US$268.7 million). Pursuant to the contracts with Hailezi, Sichuan Xinda has prepaid RMB1,710.1 million (equivalent to US$241.8 million) as of September 30, 2019, and has a remaining commitment of RMB190.0 million (equivalent to US$26.9 million).

(2)  Heilongjiang plant construction and equipment purchase

In connection with the equipment purchase contracts with Hailezi signed on September 26, 2016 and February 28, 2017 mentioned in Note 6 (i), HLJ Xinda Group has a remaining commitment of RMB30.2 million (equivalent to US$4.3 million) as of September 30, 2019.

In connection with the "HLJ Project" mentioned in Note 6 (i), pursuant to the three investment agreements, the project total capital expenditure will be RMB4,015.0 million (equivalent to be US$567.7 million), among which the investment in fixed assets shall be no less than RMB3,295.0 million (equivalent to US$465.9 million) in total. Pursuant to the contracts with Hailezi signed in November 2017 mentioned in Note 6 (i), HLJ Xinda Group has a remaining commitment of RMB18.8 million (equivalent to US$2.7 million) as of September 30, 2019.

In connection with the HLJ project, on June 25, 2018, HLJ Xinda Group entered into another equipment purchase contract with Hailezi to purchase production equipment, which will be used for 300,000 metric tons of biological based composite material, located in Harbin, for a consideration of RMB749.8 million (equivalent to US$106.0 million). Pursuant to the contract with Hailezi, HLJ Xinda Group has prepaid RMB300.7 million (equivalent to US$42.5 million) as of September 30, 2019, and has a remaining commitment of RMB449.1 million (equivalent to US$63.5 million).

In connection with the HLJ Project, on July 12, 2018, HLJ Xinda Group entered into an equipment purchase contract with Hailezi to purchase production equipment, which will be used for 300,000 metric tons of biological based composite material, located in Harbin, for a consideration of RMB1,157.0 million (equivalent to US$163.6 million). Pursuant to the contract with Hailezi, HLJ Xinda has prepaid RMB240.8 million (equivalent to US$34.0 million) as of September 30, 2019, and has a remaining commitment of RMB916.2 million (equivalent to US$129.6 million).

(3)  Dubai plant construction and equipment

On April 28, 2015, Dubai Xinda entered into a warehouse construction contract with Falcon Red Eye Contracting Co. L.L.C. for a total consideration of AED6.7 million (equivalent to US$1.8 million). As of September 30, 2019, the Company has a remaining commitment of AED1.6 million (equivalent to US$0.4 million).

On May 31, 2019, Dubai Xinda entered into a warehouse construction contract with Peaceful for a total consideration of US$18.8 million. As of September 30, 2019, the Company has a remaining commitment of US$6.7 million.

(4)   Xinda CI (Beijing) office building decoration

On March 30, 2017, Xinda CI (Beijing) Investment Holding Co., Ltd. ("Xinda Beijing Investment") entered into a decoration contract with Beijing Fangyuan Decoration Engineering Co., Ltd. for a total consideration of RMB5.8 million (equivalent to US$0.8 million) to decorate office building. As of December 31, 2018, the decoration work in the amount of RMB2.0 million (equivalent to US$0.3 million) was recorded in construction in progress. As of September 30, 2019, the Company has a remaining commitment of RMB3.8 million (equivalent to US$0.5 million).

On June 9, 2017, Xinda CI (Beijing) entered into a decoration contract with Beijing Zhonghongwufang Stone Co., Ltd for a total consideration of RMB1.2 million (equivalent to US$0.2 million) to decorate office building. As of December 31, 2018, the decoration work in the amount of RMB0.6 million (equivalent to US$0.1 million) was recorded in construction in progress. As of September 30, 2019, the Company has a remaining commitment of RMB0.6 million (equivalent to US$0.1 million).

(5) Guarantees

On December 25, 2018, HLJ Xinda Group, Sichuan Xinda and Mr. Jie Han provided guarantee to Shanghai Sales obtaining a one-year loan of RMB500.0 million (equivalent to US$70.7) from Longjiang Bank, Harbin Branch with an annual interest rate of 6.09% from December 25, 2018 to December 24, 2019. If Shanghai Sales does not repay the above loan when due, HLJ Xinda Group, Sichuan Xinda and Mr. Jie Han shall be obliged to repay the RMB500.0 million loan.

On April 15, 2019, Sichuan Xinda provided guarantee to Shanghai Sales obtaining a one-year loan of RMB800.0 million (equivalent to US$113.1 million) from Longjiang Bank, Harbin Branch with an annual interest rate of 6.09% from April 15, 2019 to April 14, 2020. If Shanghai Sales does not repay the above loan when due, Sichuan Xinda shall be obliged to repay the RMB800.0 million loan.

In the event of Shanghai Sales defaults on the loans, the Company’s material loss contingency would be RMB1.379 billion (equivalent to US$195.0 million), including estimated interest expenses of RMB79.2 million (equivalent to US$11.2 million) as of September 30, 2019. As the Company estimated that the potential material loss contingency was not probable, no accrual for a loss contingency was recognized for the nine-month period ended September 30, 2019.

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Redeemable Series D convertible preferred stock

9 Months Ended

Sep. 30, 2019

Dividends, Preferred Stock [Abstract]

Redeemable Series D convertible preferred stock

Note 14 – Redeemable Series D convertible preferred stock

On September 26, 2019, the Company delivered an irrevocable notice pursuant to Section 6(C)(ii) of the Amended and Restated Certificate of Designation, Preferences and Rights of Series D Junior Convertible Preferred Stock (the “Certificate of Designation”), to MSPEA Modified Plastics Holding Limited (“MSPEA”), and exercised its right set forth in Section 6(C)(i) of the Certificate of Designation for the mandatory conversion of each outstanding share of the redeemable Series D convertible preferred stock (“Series D Preferred Stock”) into 16,000,000 fully paid and nonassessable shares of common stock. As of September 26, 2019, 16,000,000 shares of Series D Preferred Stock were thus converted into 16,000,000 shares of common stock.

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Subsequent events

9 Months Ended

Sep. 30, 2019

Subsequent Events [Abstract]

Subsequent events

Note 22 - Subsequent Event

(i) Xinda Holding (HK) Company Limited, a wholly owned subsidiary of the Company, entered into a facility agreement on October 2, 2019 for a loan facility in an aggregate amount of US$135,000,000 with a consortium of banks and financial institutions led by Industrial and Commercial Bank of China (Macau) Limited. 

(ii) As a result of the Mandatory Conversion (see Note 14), the term of office of MSPEA’s two designees on the Board, Homer Sun and Ryan Law, was automatically terminated.  On October 14, 2019, MSPEA sent a letter (the "Proposal Withdrawal Letter") to the Board informing the Board that it no longer intended to participate in the consortium consisting of XD Engineering Plastics Company Limited, Mr. Han and MSPEA (the “Consortium”) and no longer intended to participate in the going-private transaction (the “Transaction”).  Concurrently with sending the Proposal Withdrawal Letter, MSPEA sent a letter (the "Consortium Withdrawal Letter") to the other members of the Consortium informing them that it no longer intended to participate in the Consortium and no longer intended to participate in the Transaction.

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Income tax (Narrative) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2014
Income Tax [Line Items]
PRC statutory income tax rate	25.00%
Effective income tax rate	14.80%	12.90%
Change in Effective income tax rate	14.80%	12.90%
Unrecognized tax benefits	$ 33,663,442		$ 5,578,390
Unrecognized tax benefits accrued	3,572,637
Accrued interest reserved	3,116,216
Interest relating to unrecognized tax benefits	$ 12,376,126		$ 4,351,145
Percentage of additional deduction of major PRC operating entities	75.00%
Subsidiary One [Member]
Income Tax [Line Items]
PRC statutory income tax rate	15.00%

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Accrued expenses and other current liabilities (Schedule of Accrued expenses and other current liabilities) (Details) - USD ($)		Sep. 30, 2019	Dec. 31, 2018
Accrued Liabilities, Current [Abstract]
Payables for purchase of property, plant and equipment		$ 14,038,643	$ 53,059,897
Accrued freight expenses		14,341,777	25,908,990
Accrued interest expenses		10,012,097	8,873,532
Contract liabilities	[1]	16,248,016	16,105,245
Non income tax payables		4,617,298	6,425,236
Payables to Macromolecule Composite Materials	[2]	19,422,453
Others	[3]	19,822,979	16,553,998
Total accrued expenses and other current liabilities		$ 98,503,263	$ 126,926,898

[1] Contract liabilities mainly represent the advance received from customers in the PRC for the finished goods and raw materials purchases as of September 30, 2019. The change in contract liabilities primarily represents the cash received, less amounts recognized as revenues during the period.

[2] As of September 30, 2019, the Company owed Heilongjiang Xinda Macromolecule Composite Materials Company Limited ("Macromolecule Composite Materials") US$19.4 million, which was subsequently settled in October 2019.

[3] Others mainly represent accrued payroll and employee benefits, accrued audit and consulting fees, electricity fee and other accrued miscellaneous operating expenses.

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Prepaid expenses and other current assets (Narrative) (Details)		1 Months Ended	9 Months Ended
		Dec. 31, 2017 USD ($)	Sep. 30, 2019 USD ($)	Oct. 30, 2019 USD ($)	Sep. 30, 2019 CNY (¥)	Jul. 31, 2019 USD ($)	Apr. 11, 2019 USD ($)	Dec. 31, 2018 USD ($)
Receivable, Related Parties	[1]							$ 7,285,231
China, Yuan Renminbi [Member]
Receivable, Related Parties			63,500,000
Consideration for sales of Shanghai Sales [Member]
Receivable, Related Parties			7,300,000				$ 7,300,000
Consideration for sales of Shanghai Sales [Member] | China, Yuan Renminbi [Member]
Receivable, Related Parties | ¥					¥ 50,000,000
Hong Kong Grand Royal Trading Co.,Ltd [Member]
Prepaid		$ 48,200,000
Refund			14,000,000	$ 34,200,000		$ 5,600,000
Harbin Xinda High-Tech Co. Ltd. [Member]
Amount paid by Harbin Xinda High-Tech Co., Ltd.			$ 50,100,000

[1] On December 18, 2018, HLJ Xinda Group entered into an agreement with Mr. Xiaohui Gao, General Manager of Heilongjiang Xinda Enterprise Group Shanghai New Materials Sales Company Limited ("Shanghai Sales"), to transfer Shanghai Sales from HLJ Xinda Group to Mr. Gao for a total consideration of RMB50.0 million (equivalent to US$7.4 million). Pursuant to the contract, the Company completed the legal transfer on December 19, 2018 and the full consideration of US$7.4 million was received on April 11, 2019. The cash received was included in the cash flows from investing activities for the nine-month period ended September 30, 2019.

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Earnings per share (Tables)

9 Months Ended

Sep. 30, 2019

Earnings per common share:

Calculation of Basic and Diluted Earnings Per Share

Basic and diluted earnings per share are calculated as follows:

	Three-Month Period Ended September 30,						Nine-Month Period Ended September 30,
	2019			2018			2019			2018
	US$			US$			US$			US$
Net income		16,965,213			8,964,941			68,057,245			55,288,920
Less:
Earnings allocated to participating Series D convertible preferred stock		(3,834,137	)		(2,140,971	)		(15,967,004	)		(13,257,752	)
Earnings allocated to participating nonvested shares		—			(8,904	)		—			(106,113	)
Net income for basic and diluted earnings per share		13,131,076			6,815,066			52,090,241			41,925,055
Denominator
Denominator for basic earnings per share		51,818,406			50,930,653			51,241,881			50,596,880
Dilutive effect of outstanding share options		—			32,944			—			32,944
Denominator for diluted earnings per share		51,818,406			50,963,597			51,241,881			50,629,824
Earnings per share:
Basic and diluted		0.25			0.13			1.02			0.83

Summary of Potentially Dilutive Securities

The following table summarizes potentially dilutive securities excluded from the calculation of diluted earnings per share for the three-month periods and nine-month periods ended September 30, 2019 and 2018 because their effects are anti-dilutive:

	Three-Month Period Ended September 30,				Nine-Month Period Ended September 30,
	2019		2018		2019		2018
Shares issuable upon conversion of Series D convertible preferred stock		15,130,435		16,000,000		15,706,960		16,000,000

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Basis of presentation, significant concentrations and risks (Cash Concentration) (Details)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 CNY (¥)	Sep. 30, 2019 HKD ($)	Sep. 30, 2019 MOP (MOP$)	Dec. 31, 2018 USD ($)
Restricted Cash and Cash Equivalents Items [Line Items]
Cash balance insured by the government authority	$ 1,372,734				$ 1,442,481
Restricted cash	224,647,340				325,690,023
RMB denominated bank deposits with Financial Institutions in the PRC [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents, restricted cash and time deposits maintained at banks	235,011,468				366,773,172
Cash balance insured by the government authority | ¥		¥ 500,000
Renminbi ("RMB") denominated bank deposits with Financial Institutions in Hong Kong Special Administrative Region ("Hong Kong SAR")[Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents, restricted cash and time deposits maintained at banks					8,134
U.S. dollar denominated bank deposits with Financial Institution in the U.S. [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents, restricted cash and time deposits maintained at banks	16,730				40,390
U.S. dollar denominated bank deposits with Financial Institution in the PRC [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents, restricted cash and time deposits maintained at banks	16,930				17,050
U.S. dollar denominated bank deposits with Financial Institution in Hong Kong SAR [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents, restricted cash and time deposits maintained at banks	78,930				131,892
Cash balance insured by the government authority			$ 500,000
U.S. dollar denominated bank deposits with Financial Institution in Macau Special Administrative Regio [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents, restricted cash and time deposits maintained at banks	910				6,144
Cash balance insured by the government authority | MOP$				MOP$ 500,000
U.S. dollar denominated bank deposits with Financial Institution in Dubai, UAE [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents, restricted cash and time deposits maintained at banks	3,518				14,464
HK dollar denominated bank deposits with Financial institution in Hong Kong SAR [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents, restricted cash and time deposits maintained at banks	8,290				156
Dirham denominated bank deposits with Financial Institution in Dubai, UAE [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents, restricted cash and time deposits maintained at banks	19,966				438
Collateral For Bills Payable Related To Purchase Of Raw Materials [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	129,879,525				202,568,664
Government grant [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	1,430,537				1,469,935
Letter of guarantee [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	42,575,237				70,885,301
Syndicated Loans Obtained from Chartered Bank [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	49,348,194				50,766,123
Repayment to settle of Syndicated Loans Obtained from Standard Chartered Bank [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	45,000,000
Pledged as collateral to settle short-term bank loans obtained from Postal Savings Bank of China [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	14,900,000
Short-term bank loans obtained from Postal Savings Bank of China [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 1,413,847

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Subsequent events (Details) - Consortium of banks and financial institutions led by Standard Chartered Bank [Member] - USD ($)	Oct. 02, 2019	Sep. 30, 2019
Aggregated principal amount		$ 180,000,000
Subsequent Event [Member]
Aggregated principal amount	$ 135,000,000

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UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 10,509,402	$ 41,301,817
Restricted cash	224,647,340	325,690,023
Accounts receivable, net of allowance for doubtful accounts	326,831,373	294,688,288
Inventories	699,002,558	620,033,195
Prepaid expenses and other current assets	234,507,419	132,218,528
Total current assets	1,495,498,092	1,413,931,851
Property, plant and equipment, net	798,105,488	775,941,280
Land use rights, net	28,465,372	29,796,795
Long-term prepayments to equipment and construction suppliers	436,326,962	530,636,319
Operating lease right-of-use assets, net	15,601,773
Other non-current assets	801,296	3,212,986
Total assets	2,774,798,983	2,753,519,231
Current liabilities:
Short-term bank loans, including current portion of long-term bank loans	619,522,749	729,666,920
Bills payable	431,288,254	618,166,453
Accounts payable	205,440,261	84,958,469
Amounts due to related parties	28,444,767	18,365,738
Income taxes payable	21,105,696	15,975,367
Operating lease liabilities, current	1,390,531
Accrued expenses and other current liabilities	98,503,263	126,926,898
Total current liabilities	1,405,695,521	1,594,059,845
Long-term bank loans, excluding current portion	276,518,446	111,808,244
Deferred income	93,214,165	99,583,477
Operating lease liabilities, non-current	14,513,462
Other non-current liabilities	95,038,794	101,573,772
Total liabilities	1,884,980,388	1,907,025,338
Redeemable Series D convertible preferred stock (redemption amount of nil and US$280,650,800 as of September 30, 2019 and December 31, 2018, respectively)		97,576,465
Stockholders' equity:
Series B preferred stock	100	100
Common stock, US$0.0001 par value, 500,000,000 shares authorized, 66,969,841 and 50,969,841 shares issued, 66,948,841 and 50,948,841 shares outstanding as of September 30, 2019 and December 31, 2018, respectively	6,697	5,097
Treasury stock, 21,000 shares at cost	(92,694)	(92,694)
Additional paid-in capital	184,208,447	86,633,582
Retained earnings	785,161,135	717,103,890
Accumulated other comprehensive loss	(79,465,090)	(54,732,547)
Total stockholders' equity	889,818,595	748,917,428
Commitments and contingencies
Total liabilities, redeemable convertible preferred stock and stockholders' equity	$ 2,774,798,983	$ 2,753,519,231

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Earnings per share (Calculation of Basic and Diluted Earnings Per Share) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Numerator:
Net income	$ 16,965,213	$ 8,964,941	$ 68,057,245	$ 55,288,920
Less: Earnings allocated to participating Series D convertible preferred stocks	(3,834,137)	(2,140,971)	(15,967,004)	(13,257,752)
Less: Earnings allocated to participating nonvested shares		(8,904)		(106,113)
Net income for basic and diluted earnings per share	$ 13,131,076	$ 6,815,066	$ 52,090,241	$ 41,925,055
Denominator:
Denominator for basic earnings per share	51,818,406	50,930,653	51,241,881	50,596,880
Dilutive effect of outstanding share options		32,944		32,944
Denominator for diluted earnings per share	51,818,406	50,963,597	51,241,881	50,629,824
Earnings per share:
Basic and diluted	$ 0.25	$ 0.13	$ 1.02	$ 0.83

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Cash, cash equivalents and restricted cash - USD ($)	Sep. 30, 2019	Sep. 30, 2018
Cash Cash Equivalents And Restricted Cash
Cash and cash equivalents	$ 10,509,402	$ 51,539,593
Restricted cash	224,647,340	335,915,478
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$ 235,156,742	$ 387,455,071

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Gains on disposal of a subsidiary (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gains on disposal of subsidiary			$ 518,491
Consideration for sales of Shanghai New Materials [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gains on disposal of subsidiary			$ 500,000

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Prepayments to equipment and construction suppliers (Schedule of Total Prepayments to Equipment Suppliers) (Details) - USD ($)		Sep. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Long-term Purchase Commitment [Line Items]
Total Prepayments to equipment and construction suppliers		$ 436,326,962	$ 530,636,319
Hailezi [Member]
Long-term Purchase Commitment [Line Items]
Total Prepayments to equipment and construction suppliers	[1]	412,405,158	502,087,116
Green River[Member]
Long-term Purchase Commitment [Line Items]
Total Prepayments to equipment and construction suppliers	[2]		15,778,057
Beijin Construction [Member]
Long-term Purchase Commitment [Line Items]
Total Prepayments to equipment and construction suppliers	[3]	6,670,735	6,867,269
Peaceful [Member]
Long-term Purchase Commitment [Line Items]
Total Prepayments to equipment and construction suppliers	[4]	16,860,609		$ 4,936,983
Others [Member]
Long-term Purchase Commitment [Line Items]
Total Prepayments to equipment and construction suppliers		$ 390,460	$ 966,894

[1] On September 26, 2016 and February 28, 2017, HLJ Xinda Group entered into equipment purchase contracts with Hailezi for a total consideration of RMB782.2 million (equivalent to US$110.6 million) to purchase storage facility and other equipment, which will be used for upgrading the storage system of warehouse located in Harbin, China. Pursuant to the contract with Hailezi, HLJ Xinda Group prepaid RMB621.6 million (equivalent to US$87.9 million) during the first quarter of 2017. Due to a redesign of outdoor storage facility in June 2017, HLJ Xinda Group entered into a supplementary agreement with Hailezi, which decreased the original contract amount to RMB283.7 million (equivalent to US$40.1 million). Hailezi refunded RMB369.1 million (equivalent to US$52.2 million) to HLJ Xinda Group on June 22, 2017. In May 2019, HLJ Xinda Group has prepaid another RMB1.0 million (equivalent to US$0.1 million). As of September 30, 2019, HLJ Xinda Group has prepaid RMB253.5 million (equivalent to US$35.8 million).

[2] In December 2017, HLJ Xinda Group entered into a building purchase contract with Shanghai Caohejing Kangqiao Science & Green River Construction & Development Co., Ltd. for a total consideration of RMB216.6 million (equivalent to US$30.6 million), with a total area of 13,972.64 square meters with a prepaid RMB108.3 million (equivalent to US$15.3 million).

[3] Since November 15, 2016, Sichuan Xinda entered into decoration contracts with Sichuan Beijin Construction Engineering Company Limited ("Beijin Construction") to perform indoor and outdoor decoration work for a consideration of RMB264.3 million (equivalent to US$37.4 million). Pursuant to the contracts with Beijin Construction, Sichuan Xinda has prepaid RMB120.9 million (equivalent to US$17.1 million) as of September 30, 2019, of which RMB74.0 million (equivalent to US$10.4 million) was transferred to construction in progress.

[4] On October 20, 2016, Sichuan Xinda entered into an equipment purchase contract with Peaceful Treasure Limited ("Peaceful") for a total consideration of RMB89.8 million (equivalent to US$12.7 million) to purchase certain production and testing equipment. The Company prepaid RMB33.9 million (equivalent to US$4.8 million) as of September 30, 2019.

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Prepaid expenses and other current assets (Details) - USD ($)		Sep. 30, 2019	Dec. 31, 2018
Prepaid Expense and Other Assets, Current [Abstract]
Value added taxes receivables	[1]	$ 1,911,502	$ 4,700,702
Advances to suppliers	[2]	131,089,782	104,469,023
Interest receivable	[3]	939,962	826,729
Consideration for sales of Shanghai Sales	[4]		7,285,231
Receivables from Hong Kong Grand Royal Trading Co., Ltd.	[5]	42,566,949
Receivables from Harbin Xinda High-Tech Co., Ltd.	[6]	50,096,218
Others	[7]	7,903,006	14,936,843
Total prepaid expenses and other current assets		$ 234,507,419	$ 132,218,528

[1] Value added taxes receivables mainly represent the input taxes on purchasing equipment by Heilongjiang Xinda Enterprise Group Company Limited ("HLJ Xinda Group") and Sichuan Xinda, Enterprise Group Company Limited ("Sichuan Xinda"), which are to be net off with output taxes. Value added taxes receivables were recognized in operating activities in consolidated statements of cash flows.

[2] Advances to suppliers are the advances to purchase raw materials.

[3] Interest receivable mainly represents interest income accrued from restricted cash.

[4] On December 18, 2018, HLJ Xinda Group entered into an agreement with Mr. Xiaohui Gao, General Manager of Heilongjiang Xinda Enterprise Group Shanghai New Materials Sales Company Limited ("Shanghai Sales"), to transfer Shanghai Sales from HLJ Xinda Group to Mr. Gao for a total consideration of RMB50.0 million (equivalent to US$7.4 million). Pursuant to the contract, the Company completed the legal transfer on December 19, 2018 and the full consideration of US$7.4 million was received on April 11, 2019. The cash received was included in the cash flows from investing activities for the nine-month period ended September 30, 2019.

[5] Hong Kong Grand Royal Trading Co., Ltd. ("Hong Kong Grand Royal") is a raw material supplier of Dubai Xinda. Dubai Xinda has prepaid US$48.2 million to Hong Kong Grand Royal in 2017 for purchase of raw materials. Due to the price fluctuation of raw materials, Hong Kong Grand Royal could not purchase and deliver the raw materials to Dubai Xinda. In July 2019, both parties entered into a supplemental agreement to cancel the original purchase agreements and Hong Kong Grand Royal shall refund US$14.0 million by September 30, 2019 and US$34.2 million by October 30, 2019. As of September 30, 2019, Hong Kong Grand Royal has refunded US$5.6 million. On October 25, 2019, both parties entered into another supplemental agreement, pursuant to which, the remaining refund shall be paid by December 30, 2019.

[6] During the nine-month period ended September 30, 2019, the Company transferred US$50.1 million to Harbin Xinda High-Tech Co., Ltd. The amount was subsequently settled in November 2019 .

[7] Others mainly include prepaid miscellaneous service fee and staff advance.

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Borrowings (Schedule of Short-Term Loans, Including Current Portion of Long-Term Bank Loans) (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Short-term Debt [Line Items]
Total short-term loans, including current portion of long-term bank loans	$ 619,522,749	$ 729,666,920
Unsecured loans [Member]
Short-term Debt [Line Items]
Total short-term loans, including current portion of long-term bank loans	310,183,942	418,198,508
Loans secured by accounts receivable [Member]
Short-term Debt [Line Items]
Total short-term loans, including current portion of long-term bank loans	63,623,125	65,567,082
Loans secured by restricted cash [Member]
Short-term Debt [Line Items]
Total short-term loans, including current portion of long-term bank loans	59,138,472	69,500,000
Current portion of long-term bank loans [Member]
Short-term Debt [Line Items]
Total short-term loans, including current portion of long-term bank loans	$ 186,577,210	$ 176,401,330

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Other non-current liabilities (Tables)

9 Months Ended

Sep. 30, 2019

Other Liabilities, Noncurrent [Abstract]

Schedule of other non-current liabilities

	September 30,		December 31,
	2019		2018
		US$		US$
Income tax payable-noncurrent (i)		89,976,096		92,461,068
Deferred income tax liabilities		5,062,698		6,716,921
Others		—		2,395,783
Total other non-current liabilities		95,038,794		101,573,772

(i) Income tax payable-noncurrent represents the repatriation tax, the accumulative balance of unrecognized tax benefits since 2015 and related accrued interest. According to the Tax Cuts and Jobs Act enacted on December 22, 2017, the management recognized the amount of U.S. tax corporate income tax is US$70,965,148 based on the deemed repatriation to the United States of accumulated earnings mandated by the U.S. tax reform, US$17,031,636 of which due payable in 2018 and 2019 was classified as current liabilities.

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Accounts receivable (Tables)

9 Months Ended

Sep. 30, 2019

Accounts Receivable, after Allowance for Credit Loss [Abstract]

Schedule of Accounts Receivable

Accounts receivable consists of the following:

	September 30, 2019			December 31, 2018
		US$			US$
Accounts receivable		326,868,747			294,726,804
Allowance for doubtful accounts		(37,374	)		(38,516	)
Accounts receivable, net		326,831,373			294,688,288

Schedule of Aging of Accounts Receivable

The following table provides an analysis of the aging of accounts receivable as of September 30, 2019 and December 31, 2018:

	September 30, 2019		December 31, 2018
		US$		US$
Aging:
– current		270,927,987		218,458,862
– 1-3 months past due		34,349,372		31,386,341
– 4-6 months past due		5,753,489		109,412
– 7-12 months past due		15,124,228		42,532,170
– greater than one year past due		713,671		2,240,019
Total accounts receivable		326,868,747		294,726,804

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Prepayments to equipment and construction suppliers (Tables)

9 Months Ended

Sep. 30, 2019

Prepayments to equipment suppliers [Abstract]

Schedule of Total Prepayments to Equipment Suppliers

	September 30, 2019		December 31, 2018
		US$		US$
Hailezi (i)		412,405,158		502,087,116
Green River (ii)		—		15,778,057
Beijin Construction (iii)		6,670,735		6,867,269
Peaceful Treasure Limited(iv)		16,860,609		4,936,983
Others		390,460		966,894
Total Prepayments to equipment and construction suppliers		436,326,962		530,636,319

(i) On September 26, 2016 and February 28, 2017, HLJ Xinda Group entered into equipment purchase contracts with Hailezi for a total consideration of RMB782.2 million (equivalent to US$110.6 million) to purchase storage facility and other equipment, which will be used for upgrading the storage system of warehouse located in Harbin, China. Pursuant to the contract with Hailezi, HLJ Xinda Group prepaid RMB621.6 million (equivalent to US$87.9 million) during the first quarter of 2017.  Due to a redesign of outdoor storage facility in June 2017, HLJ Xinda Group entered into a supplementary agreement with Hailezi, which decreased the original contract amount to RMB283.7 million (equivalent to US$40.1 million). Hailezi refunded RMB369.1 million (equivalent to US$52.2 million) to HLJ Xinda Group on June 22, 2017. In May 2019, HLJ Xinda Group has prepaid another RMB1.0 million (equivalent to US$0.1 million). As of September 30, 2019, HLJ Xinda Group has prepaid RMB253.5 million (equivalent to US$35.8 million). 

Schedule of Summarized Balance of Prepayments

The table below summarized the balance of prepayments to Hailezi for each of the projects as of September 30, 2019 and December 31, 2018, and the movements of the prepayments:

(in millions US$)
Year		Projects	Balance as of December 31, 2018		Prepaid in 2019		Transfer to CIP in 2019			Effect of foreign currency exchange rate changes			Balance as of September 30, 2019
	2017	Storage system		36.8		0.1		—			(1.1	)		35.8
	2017	HLJ project		134.2		—		(75.0	)		(4.0	)		55.2
	2018	HLJ project		78.9		—		—			(2.3	)		76.6
	2017	Nanchong project		3.0		—		—			—			3.0
	2018	Nanchong project		249.2		—		—			(7.4	)		241.8
	Total			502.1		0.1		(75.0	)		(14.8	)		412.4

(ii) In December 2017, HLJ Xinda Group entered into a building purchase contract with Shanghai Caohejing Kangqiao Science & Green River Construction & Development Co., Ltd. for a total consideration of RMB216.6 million (equivalent to US$31.6 million), with a total area of 13,972.64 square meters with a prepaid RMB108.3 million (equivalent to US$15.8 million).

(iii) Since November 15, 2016, Sichuan Xinda entered into decoration contracts with Sichuan Beijin Construction Engineering Company Limited ("Beijin Construction") to perform indoor and outdoor decoration work for a consideration of RMB264.3 million (equivalent to US$37.4 million). Pursuant to the contracts with Beijin Construction, Sichuan Xinda has prepaid RMB120.9 million (equivalent to US$17.1 million) as of September 30, 2019, of which RMB74.0 million (equivalent to US$10.4 million) was transferred to construction in progress.

(iv) On October 20, 2016, Sichuan Xinda entered into an equipment purchase contract with Peaceful Treasure Limited ("Peaceful") for a total consideration of RMB89.8 million (equivalent to US$12.7 million) to purchase certain production and testing equipment. The Company prepaid RMB33.9 million (equivalent to US$4.8 million) as of September 30, 2019.

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Related party transactions

9 Months Ended

Sep. 30, 2019

Related Party Transactions [Abstract]

Related party transactions

Note 10 – Related Party Transactions

The related party transactions are summarized as follows:

	Three-Month Period Ended September 30,						Nine-Month Period Ended September 30,
	2019			2018			2019			2018
	US$			US$			US$			US$
Transactions with related parties:
Revenues resulting from transactions with a related party:
Sales to Macromolecule Composite Materials (v)		734,895			—			1,040,485			—
Financing transactions with related parties:
Investment received in advance from Changmu (i)		—			—			—			75,567,512
Refund of investment received in advance to Changmu (i)		—			(75,567,512	)		—			(75,567,512	)
Proceeds of interest-free advances from Changmu (i)		—			3,779,509			—			3,779,509
Interest-free advances from Mr. Jie Han (ii)		—			1,162,926			2,920,049			1,162,926
Repayment of interest-free advances from Mr. Jie Han (ii)		(116,802	)		—			(116,802	)		—
Interest-free advances from Mr. Jie Han’s son(ii)		8,760,147			726,830			8,760,147			726,830
Interest-free advances from senior management employee in HLJ Xinda Group and Sichuan Xinda (iii)		—			8,587,164			275,234			8,587,164
Repayment of interest-free advances from senior management employees in HLJ Xinda Group and Sichuan Xinda (iii)		(292,005	)		—			(4,679,484	)		—
Interest-free advances from Mr. Qingwei Ma (iv)		4,526,076			—			4,526,076			—
Repayment of interest-free advances from Mr. Qingwei Ma (iv)		(730,012	)		—			(730,012	)		—
Interest-free advances from Macromolecule Composite Materials (v)		—			—			63,488,212			—
Repayment of interest-free advances from Macromolecule Composite Materials (v)		(2,935,570	)		—			(63,017,445	)		—
Total financing transactions with related parties		9,211,834			(61,311,083	)		11,425,975			14,256,429

The related party balances are summarized as follows:

	September 30, 2019		December 31, 2018
		US$		US$
Amounts due to related parties:
Mr. Jie Han		12,328,748		9,907,915
Mr. Jie Han’s wife		3,101,479		3,180,965
Mr. Jie Han’s son		9,190,007		728,523
Senior management employees in HLJ Xinda Group and Sichuan Xinda		148,530		4,548,335
Mr. Qingwei Ma		3,676,003		—
Total amounts due to related parties		28,444,767		18,365,738

(i) On July 14, 2018, Xinda Holding (HK) entered into a subscription intent agreement with Changmu Investment (Beijing) Company Limited (“Changmu”), a company wholly controlled by Mr. Tiexin Han, the son of Mr. Jie Han, the Chief Executive Officer and Chairman of the Company. Pursuant to the terms of the agreement, HLJ Xinda Group received RMB500.0 million (equivalent to US$75.6 million) from Changmu on June 29, 2018 as deposits in order to subscribe newly authorized registered capital of HLJ Xinda Group subject to further negotiations. Due to the inability to reach agreement on the terms, both parties agreed not to proceed with any definitive agreement. Therefore, HLJ Xinda Group refunded the investment received in advance from Changmu in September 2018.

During the nine-month period ended September 30, 2018, the Company also received RMB26.0 million (equivalent to US$3.8 million) from Changmu as interest-free advances.

(ii) During the nine-month ended September 30, 2018, the Company received RMB8.0 million (equivalent to US$1.2 million) from Mr. Jie Han, the Chairman of the Company, and RMB5.0 million (equivalent to US$0.7 million) from Mr. Tiexin Han, the son of Mr. Jie Han, as interest-free advances to the Company.

During the nine-month period ended September 30, 2019, the Company received another RMB20.0 million (equivalent to US$2.9 million) from Mr. Jie Han as interest-free advances and repaid RMB0.8 million (equivalent to US$0.1 million). As of September 30, 2019, the amounts due to Mr. Jie Han was RMB87.2 million (equivalent to US$12.3 million).

During the nine-month period ended September 30, 2019, the Company received another RMB60.0 million (equivalent to US$8.8 million) from Mr. Tiexin Han as interest-free advances. As of September 30, 2019, the amounts due to Mr. Tiexin Han was RMB65.0 million (equivalent to US$9.2 million).

(iii) In August 2018, the Company received RMB10.0 million (equivalent to US$1.5 million) each from three senior management employees (Messers Junjie Ma, Yuchong Jia, Guangjun Jiao) of Sichuan Xinda as interest-free advances to Sichuan Xinda. During the nine-month period ended September 30, 2018, the Company also received RMB29.1 million (equivalent to US$4.2 million) from a senior management employee (Mr. Rujun Dai) of HLJ Xinda Group as interest-free advances to HLJ Xinda Group.

In April 2019, the Company repaid the RMB30.0 million (equivalent to US$4.4 million) to the senior management employees in Sichuan Xinda. During the nine-month period ended September 30, 2019, the Company received another RMB1.9 million (equivalent to US$0.3 million) from Mr. Rujun Dai and repaid RMB2.0 million (equivalent to US$0.3 million) to Mr. Rujun Dai. As of September 30, 2019, the amounts due to Mr. Rujun Dai was RMB1.1 million (equivalent to US$0.1 million).

(iv) During the nine-month period ended September 30, 2019, the Company received RMB31.0 million (equivalent to US$4.5 million) from Qingwei Ma, the Chief Operating Officer of the Company, as interest-free advances to the Company, and repaid RMB5.0 million (equivalent to US$0.7 million). As of September 30, 2019, the amounts due to Mr. Qingwei Ma was RMB26.0 million (equivalent to US$3.7 million).

(v) On December 26, 2018, Shanghai Sales set up Heilongjiang Xinda Macromolecule Composite Materials Company Limited. On April 22, 2019, Shanghai Sales transferred 97.5% equity interest in Macromolecule Composite Materials to Harbin Shengtong Engineering Plastics Co. Ltd. ("Harbin Shengtong"). Mr. Xigang Chen, who was the general manager of Sichuan Xinda, is the general manager and also the principal shareholder of Harbin Shengtong.

Since Mr. Xigang Chen resigned from Sichuan Xinda on August 5, 2019, Macromolecule Composite Materials was no longer a related party of the Company.

During the period from April 22, 2019 through August 5, 2019, the Company sold products to Macromolecule Composite Materials in US$1.0 million.

During the period from April 22, 2019 through August 5, 2019, the Company received RMB434.4 million (equivalent to US$63.5 million) of interest-free advances from Macromolecule Composite Materials and repaid RMB431.6 million (equivalent to US$63.0 million).

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Prepayments to equipment and construction suppliers

9 Months Ended

Sep. 30, 2019

Prepayments to equipment suppliers [Abstract]

Prepayments to equipment suppliers

Note 6 - Prepayments to equipment and construction suppliers

	September 30, 2019		December 31, 2018
		US$		US$
Hailezi (i)		412,405,158		502,087,116
Green River (ii)		—		15,778,057
Beijin Construction (iii)		6,670,735		6,867,269
Peaceful Treasure Limited(iv)		16,860,609		4,936,983
Others		390,460		966,894
Total Prepayments to equipment and construction suppliers		436,326,962		530,636,319

(i) On September 26, 2016 and February 28, 2017, HLJ Xinda Group entered into equipment purchase contracts with Hailezi for a total consideration of RMB782.2 million (equivalent to US$110.6 million) to purchase storage facility and other equipment, which will be used for upgrading the storage system of warehouse located in Harbin, China. Pursuant to the contract with Hailezi, HLJ Xinda Group prepaid RMB621.6 million (equivalent to US$87.9 million) during the first quarter of 2017.  Due to a redesign of outdoor storage facility in June 2017, HLJ Xinda Group entered into a supplementary agreement with Hailezi, which decreased the original contract amount to RMB283.7 million (equivalent to US$40.1 million). Hailezi refunded RMB369.1 million (equivalent to US$52.2 million) to HLJ Xinda Group on June 22, 2017. In May 2019, HLJ Xinda Group has prepaid another RMB1.0 million (equivalent to US$0.1 million). As of September 30, 2019, HLJ Xinda Group has prepaid RMB253.5 million (equivalent to US$35.8 million). 

On July 21, 2017, HLJ Xinda Group entered into three investment agreements with the Management Committee of Harbin Economic- Technological Development Zone with respect to the industrial project for 300,000 metric tons of biological composite materials, the industrial project for upgrading existing equipment for 100,000 metric tons of engineering plastics and the industrial project for a 3D printing intelligent manufacture demonstration factory and a 3D printing display and experience cloud factory (the "HLJ Project"). In order to fulfill the agreements, HLJ Xinda Group entered into an equipment purchase contract with Hailezi to purchase production equipment in November 2017, which will be used for 100,000 metric tons of engineering plastics located in Harbin, for a consideration of RMB939.7 million (equivalent to US$132.9million). Pursuant to the contract with Hailezi, HLJ Xinda Group has prepaid RMB920.9 million (equivalent to US$130.2 million) in total as of June 30, 2019. RMB530.8 million (equivalent to US$75.0 million) of the equipment was delivered in June 2019 and the prepayment was transferred to construction in progress. As of September 30, 2019, the amount of the remaining prepayment was RMB390.1 million (equivalent to US$55.2 million).

In connection with the HLJ project, in June and July 2018, HLJ Xinda Group entered into two equipment purchase contracts with Hailezi to purchase production equipment, which will be used for 300,000 metric tons of biological based composite material, located in Harbin, for a consideration of RMB1,906.8 million (equivalent to US$269.6 million). Pursuant to the contracts with Hailezi, HLJ Xinda Group has prepaid RMB541.5 million (equivalent to US$76.6 million) as of September 30, 2019.

On March 17, 2017, Sichuan Xinda entered into a definitive agreement with the People's Government of Shunqing District, Nanchong City of Sichuan Province for the production of 300,000 metric tons of bio-composite materials and additive manufacturing and 20,000 metric tons of functional masterbatch, a high-end color additive process in plastics manufacturing (the "Nanchong Project"). The Nanchong Project will be located in a land area of 250 mu (equivalent to 41.2 acres), with 215 mu designated for bio-composite materials and additive manufacturing production and 35 mu to be designated for functional masterbatch production. The projected total capital expenditures for the project is approximately RMB2.5 billion (equivalent to US$353.5 million).

In connection with the Nanchong Project, Sichuan Xinda entered into equipment purchase contracts with Hailezi to purchase production equipment and testing equipment. Pursuant to the contracts with Hailezi, Sichuan Xinda prepaid RMB1,728.9 million (equivalent to US$244.4 million) in the first quarter of year 2017. In 2017, in order to ensure the traceability of the product and management of supply chain, Sichuan Xinda expected to launch an integrated ERP system, which resulted in the equipment to be purchased under the original contracts with Hailezi not meeting the production requirements. Hailezi agreed to refund the prepayment in the amount of RMB1,704.9 million (equivalent to US$241.0 million) by the end of March 2018, the remaining uncancelled amount is RMB24.0 million (equivalent to US$3.4 million). As of December 31, 2017, Sichuan Xinda signed a supplementary agreement with Hailezi, pursuant to the agreement, Sichuan Xinda agreed to pay RMB12.4 million (equivalent to US$1.8 million) to Hailezi for the compensation of Hailezi due to the termination of the purchase contracts. In January 2018, Hailezi refunded the above-mentioned prepayment. The Company received the testing equipment in the amount of RMB3.2 million (equivalent to US$0.5 million) in November 2018, the remaining balance of the uncancelled prepayment as of September 30, 2019 was RMB20.8 million (equivalent to US$3.0 million).

In connection with the Nanchong Project, on June 21, 2018, Sichuan Xinda entered into another equipment purchase contract with Hailezi to purchase production equipment and testing equipment for a consideration of RMB1,900.1 million (equivalent to US$268.7 million). Pursuant to the contracts with Hailezi, Sichuan Xinda has prepaid RMB1,710.1 million (equivalent to US$241.8 million) as of September 30, 2019.

The table below summarized the balance of prepayments to Hailezi for each of the projects as of September 30, 2019 and December 31, 2018, and the movements of the prepayments:

(in millions US$)
Year		Projects	Balance as of December 31, 2018		Prepaid in 2019		Transfer to CIP in 2019			Effect of foreign currency exchange rate changes			Balance as of September 30, 2019
	2017	Storage system		36.8		0.1		—			(1.1	)		35.8
	2017	HLJ project		134.2		—		(75.0	)		(4.0	)		55.2
	2018	HLJ project		78.9		—		—			(2.3	)		76.6
	2017	Nanchong project		3.0		—		—			—			3.0
	2018	Nanchong project		249.2		—		—			(7.4	)		241.8
	Total			502.1		0.1		(75.0	)		(14.8	)		412.4

(ii) In December 2017, HLJ Xinda Group entered into a building purchase contract with Shanghai Caohejing Kangqiao Science & Green River Construction & Development Co., Ltd. for a total consideration of RMB216.6 million (equivalent to US$31.6 million), with a total area of 13,972.64 square meters with a prepaid RMB108.3 million (equivalent to US$15.8 million).

During the six-month period ended June 30, 2019, HLJ Xinda Group entered into an agreement with Green River and Shanghai Sales, to transfer the rights and obligations of HLJ Xinda Group under the original purchase agreement to Shanghai Sales. Pursuant to the agreement, Shanghai Sales shall pay the RMB108.3 million (equivalent to US$15.8 million) to HLJ Xinda Group. As a result, the prepayment was reclassified as prepaid expenses and other current assets during the six-month period ended June 30, 2019. HLJ Xinda Group received the RMB108.3 million on August 6, 2019, which was included in the cash flows from investing activities for the nine-month period ended September 30, 2019.

(iii) Since November 15, 2016, Sichuan Xinda entered into decoration contracts with Sichuan Beijin Construction Engineering Company Limited ("Beijin Construction") to perform indoor and outdoor decoration work for a consideration of RMB264.3 million (equivalent to US$37.4 million). Pursuant to the contracts with Beijin Construction, Sichuan Xinda has prepaid RMB120.9 million (equivalent to US$17.1 million) as of September 30, 2019, of which RMB74.0 million (equivalent to US$10.4 million) was transferred to construction in progress.

(iv) On October 20, 2016, Sichuan Xinda entered into an equipment purchase contract with Peaceful Treasure Limited ("Peaceful") for a total consideration of RMB89.8 million (equivalent to US$12.7 million) to purchase certain production and testing equipment. The Company prepaid RMB33.9 million (equivalent to US$4.8 million) as of September 30, 2019.

On May 31, 2019, Dubai Xinda entered into an equipment purchase contract with Peaceful for a total consideration of US$18.8 million to purchase storage and testing equipment. The Company prepaid US$12.1 million as of September 30, 2019.

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Leases (Schedule of Future Minimum Annual Lease Payments) (Details)	Dec. 31, 2018 USD ($)
Years ended December 31,
2019	$ 2,174,439
2020	1,486,007
2021	1,486,007
2022	1,446,251
2023	1,482,593
Thereafter	$ 21,176,139

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UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Redeemable Series D convertible preferred stock, redemption amount	$ 280,650,800	$ 280,650,800
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	66,948,841	50,969,841
Common stock, shares outstanding	66,948,841	50,948,841
Treasury shares, shares	21,000	21,000

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Stock based compensation (Narrative) (Details) - General and administrative expenses [Member] - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Nonvested Shares [Member]
Stock based compensation expense		$ 45,339		$ 2,675,115
Stock options Shares [Member]
Stock based compensation expense		$ 595,044		$ 595,044

XML

Basis of presentation, significant concentrations and risks

9 Months Ended

Sep. 30, 2019

Basis of presentation, significant concentrations and risks [Abstract]

Basis of presentation and significant concentrations and risks

Note 1 - Basis of presentation, significant concentrations and risks

(a) Basis of presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted as permitted by rules and regulations of the United States Securities and Exchange Commission ("SEC"). The condensed consolidated balance sheet as of December 31, 2018 was derived from the audited consolidated financial statements of China XD Plastics Company Limited ("China XD") and subsidiaries (collectively, the "Company"). The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated balance sheet of the Company as of December 31, 2018, and the related consolidated statements of comprehensive income, changes in equity and cash flows for the year then ended, included in the Company's Annual Report on Form 10-K filed with the SEC on April 15, 2019.

In the opinion of the management, all adjustments (which include normal recurring adjustments) necessary to present a fair statement of the financial position as of September 30, 2019, the results of operations and cash flows for the nine-month periods ended September 30, 2019 and 2018, have been made.

The preparation of condensed consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include the recoverability of the carrying amounts of property, plant and equipment, the realizability of inventories, the useful lives of property, plant and equipment, the collectability of accounts receivable, the fair values of stock-based compensation awards, the accruals for tax uncertainties and other contingencies, and the discount rate used to determine the present value of the lease payments. The current economic environment has increased the degree of uncertainty inherent in those estimates and assumptions.

(b) Accounting pronouncement adopted in 2019

In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842) ("ASU 2016-02"). The new guidance requires the recognition of lease assets and liabilities for operating leases with terms of more than 12 months, in addition to those currently recorded, on the Company’s consolidated balance sheets. Presentation of leases within the consolidated statements of comprehensive income and consolidated statements of cash flows will be generally consistent with the current lease accounting guidance. The Company has adopted this ASU on January 1, 2019 using a modified retrospective approach by recognizing a cumulative-effect adjustment to the opening balance of retained earnings. This adoption approach resulted in a balance sheet presentation that was not be comparable to the prior period in the first year of adoption. Additionally, the Company used the package of practical expedients that allowed the Company to not reassess: (1) whether any expired or existing contracts are or contain leases, (2) lease classification for any expired or existing leases and (3) initial direct costs for any expired or existing leases. The Company also elected the hindsight practical expedient to determine the reasonably certain lease term for existing leases. The adoption of the standard resulted in recognition of right-of-use (“ROU”) assets and lease liabilities of approximately US$16.1 million and US$16.8 million, respectively, as of January 1, 2019. The difference between the initial operating right-of-use asset and operating lease liability of US$0.7 million was accrued rent previously recognized under ASC 840. There was no cumulative effect on retained earnings as of January 1, 2019 as a result of adoption.

In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (“ASU 2018-02”). The new guidance allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act and will improve the usefulness of information reported to financial statement users. The Company has adopted the standard on January 1, 2019, and there was no material impact on its consolidated financial statements as a result of the adoption.

In June 2018, the FASB issued ASU No. 2018-07, Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting (“ASU 2018-07”). The new guidance largely aligns the accounting for share-based awards issued to employees and nonemployees. Existing guidance for employee awards will apply to non-employee share-based transactions with limited exceptions. The new guidance also clarifies that any share based payment awards issued to customers should be evaluated under ASC 606, Revenue from Contracts with Customers. The Company has adopted the standard on January 1, 2019, and there was no material impact on its consolidated financial statements as a result of the adoption.

(c) Significant concentrations and risks

Sales concentration

The Company sells its products primarily through approved distributors in the People's Republic of China (the "PRC"). The Company's sales are highly concentrated. Sales to distributors individually exceeded 10% of the Company's revenues for the three-month and nine-month periods ended September 30, 2019 and 2018, are as follows:

	Three-Month Period Ended September 30,
	2019					2018
	US$		%			US$		%
Distributor A, located in PRC		48,354,258		13.0	%		43,675,493		14.8	%
Distributor B, located in PRC		41,236,907		11.1	%		38,087,744		12.8	%
Distributor C, located in PRC		31,224,911		8.4	%		34,620,819		11.6	%
Total		120,816,076		32.5	%		116,384,056		39.2	%

	Nine-Month Period Ended September 30,
	2019					2018
	US$		%			US$		%
Distributor A, located in PRC		163,355,649		14.4	%		136,172,680		14.7	%
Distributor B, located in PRC		115,842,572		10.2	%		114,870,175		12.4	%
Distributor C, located in PRC		86,271,299		7.6	%		105,340,424		11.4	%
Total		365,469,520		32.2	%		356,383,279		38.5	%

The Company expects revenues from these distributors to continue to represent a substantial portion of its revenue in the future. Any factor adversely affecting the automobile industry in the PRC or the business operations of these customers will have a material effect on the Company's business, financial position and results of operations.

Purchase concentration of raw materials and equipment

The principal raw materials used for the Company's production of modified plastics products are plastic resins, such as polypropylene, ABS and nylon. The Company purchases substantially all of its raw materials through a limited number of distributors.  Raw material purchases from these distributors, which individually exceeded 10% of the Company's total raw material purchases, accounted for approximately 31.6% (three distributors) and 43.2% (four distributors) for the three-month periods ended September 30, 2019 and 2018, respectively, and 32.6% (three distributors) and 20.4% (two distributors) of the Company's total raw materials purchases for the nine-month periods ended September 30, 2019 and 2018, respectively. Management believes that other suppliers could provide similar raw materials on comparable terms. A change in suppliers, however, could cause a delay in manufacturing and a possible loss of sales, which would adversely affect the Company's business, financial position and results of operations.

Cash concentration

Cash and cash equivalents and short-term restricted cash mentioned below maintained at banks consist of the following:

	September 30, 2019		December 31, 2018
		US$		US$
Renminbi (“RMB”) denominated bank deposits with:
Financial Institutions in the PRC		235,011,468		366,773,172
Financial Institutions in Hong Kong Special Administrative Region ("Hong Kong SAR")		—		8,134
United States (“U.S.”) dollar denominated bank deposits with:
Financial Institution in the U.S.		16,730		40,390
Financial Institutions in the PRC		16,930		17,050
Financial Institution in Hong Kong SAR		78,930		131,892
Financial Institution in Macau Special Administrative Region ("Macau SAR")		910		6,144
Financial Institution in Dubai, UAE		3,518		14,464
Hong Kong dollar denominated bank deposits with:
Financial institution in Hong Kong SAR		8,290		156
Dirham denominated bank deposits with:
Financial institution in Dubai, UAE		19,966		438

The bank deposits with financial institutions in the PRC are insured by the government authority for up to RMB500,000. The bank deposits with financial institutions in the Hong Kong SAR are insured by the government authority for up to HK$500,000. The bank deposits with financial institutions in the Macau SAR are insured by the government authority for up to MOP$500,000. The bank deposits with financial institutions in the Dubai, UAE are not insured by the government authority. Total bank deposits amounting to US$1,372,734 and US$1,442,481 were insured as of September 30, 2019 and December 31, 2018, respectively. The Company has not experienced any losses in uninsured bank deposits and does not believe that it is exposed to any significant risks on cash held in bank accounts. To limit exposure to credit risk, the Company primarily places bank deposits with large financial institutions in the PRC, Hong Kong SAR, Macau SAR and Dubai, UAE with acceptable credit rating.

Cash deposits in bank that are restricted as to withdrawal or usage for up to 12 months are reported as restricted cash in the consolidated balance sheets.

Short-term bank deposits that are pledged as collateral for bills payable relating to purchases of raw materials are reported as restricted cash and amounted to US$129,879,525 and US$202,568,664 as of September 30, 2019 and December 31, 2018, respectively. Upon maturity and repayment of the bills payable, which is generally within 6 months, the cash becomes available for use by the Company.

Short-term bank deposits that are related to government grant are reported as restricted cash and amounted to US$1,430,537 and US$1,469,935 as of September 30, 2019 and December 31, 2018, respectively. 

Short-term bank deposits that are pledged as collateral for issuance of letter of guarantee are reported as restricted cash amounted to US$42,575,237 and US$70,885,301 as of September 30, 2019 and December 31, 2018, respectively.

Short-term bank deposits that are pledged as repayment to settle US$45.0 million of syndicated loans obtained from Standard Chartered Bank are reported as restricted cash and amounted to US$49,348,194 and US$50,766,123 as of September 30, 2019 and December 31, 2018, respectively.

Short-term bank deposits that are pledged as collateral to settle US$14.9 million of short-term bank loans obtained from Postal Savings Bank of China are reported as restricted cash and amounted to US$1,413,847 and nil as of September 30, 2019 and December 31, 2018, respectively.

XML

Revenues (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Sales Revenue By Product [Line Items]
Total Revenue	$ 373,159,091	$ 297,224,740	$ 1,137,698,978	$ 925,007,293
Modified Polyamide 66 PA66 [Member]
Sales Revenue By Product [Line Items]
Total Revenue	120,234,670	72,832,370	296,372,085	242,690,994
Modified Polyamide 6 PA6 [Member]
Sales Revenue By Product [Line Items]
Total Revenue	78,940,503	54,018,912	250,529,646	180,317,333
Plastic Alloy [Member]
Sales Revenue By Product [Line Items]
Total Revenue	66,353,485	76,511,378	200,901,936	234,487,071
Modified Polypropylene PP [Member]
Sales Revenue By Product [Line Items]
Total Revenue	32,666,069	60,923,190	110,518,373	158,280,180
Modified Acrylonitrile Butadiene Styrene ABS [Member]
Sales Revenue By Product [Line Items]
Total Revenue	12,437,078	6,299,771	40,662,342	23,128,606
Polyoxymethylenes POM [Member]
Sales Revenue By Product [Line Items]
Total Revenue	2,053,799	2,881,985	6,953,161	7,753,725
Polyphenylene Oxide PPO [Member]
Sales Revenue By Product [Line Items]
Total Revenue	5,490,232	2,425,361	31,482,628	13,215,599
Polylactide PLA [Member]
Sales Revenue By Product [Line Items]
Total Revenue	17,525,906	20,854,274	46,789,233	64,583,387
Polyethylene (PE) [Member]
Sales Revenue By Product [Line Items]
Total Revenue	4,103,483		7,707,560
Work in progress [Member]
Sales Revenue By Product [Line Items]
Total Revenue	33,062,822		145,362,837
Raw Materials [Member]
Sales Revenue By Product [Line Items]
Total Revenue	291,044	477,499	419,177	550,398
Distributors [Member]
Sales Revenue By Product [Line Items]
Total Revenue	312,919,940	292,507,429	918,602,515	911,068,381
Direct customers [Member]
Sales Revenue By Product [Line Items]
Total Revenue	59,948,107	4,239,812	218,677,286	13,388,514
Others [Member]
Sales Revenue By Product [Line Items]
Total Revenue	$ 291,044	$ 477,499	$ 419,177	$ 550,398

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Borrowings (Schedule of Long-Term Bank Loans Excluding Current Portion) (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total long-term bank loans, excluding current portion	$ 276,518,446	$ 111,808,244
Secured loans [Member]
Debt Instrument [Line Items]
Total long-term bank loans, excluding current portion	72,652,556	2,177,985
Unsecured loans [Member]
Debt Instrument [Line Items]
Total long-term bank loans, excluding current portion	300,443,100	196,031,589
Syndicate loan facility [Member]
Debt Instrument [Line Items]
Total long-term bank loans, excluding current portion	90,000,000	90,000,000
Current Portion [Member]
Debt Instrument [Line Items]
Total long-term bank loans, excluding current portion	$ 186,577,210	$ 176,401,330

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Prepayments to equipment and construction suppliers (Schedule of Summarized the Balance of Prepayments) (Details) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019 USD ($)
Storage system project in year 2017 [Member]
Long-term Purchase Commitment [Line Items]
Balance as of December 31, 2018	$ 36.8
Prepaid / (Utilized) in 2019	0.1
Transfer to CIP in 2019
Effect of foreign currency exchange rate changes	(1.1)
Balance as of June 30, 2019	35.8
HLJ project in year 2017 [Member]
Long-term Purchase Commitment [Line Items]
Balance as of December 31, 2018	134.2
Prepaid / (Utilized) in 2019
Transfer to CIP in 2019	(7.5)
Effect of foreign currency exchange rate changes	(0.4)
Balance as of June 30, 2019	55.2
HLJ project in year 2018 [Member]
Long-term Purchase Commitment [Line Items]
Balance as of December 31, 2018	78.9
Prepaid / (Utilized) in 2019
Transfer to CIP in 2019
Effect of foreign currency exchange rate changes	(2.3)
Balance as of June 30, 2019	76.6
Nanchong project in year 2017 [Member]
Long-term Purchase Commitment [Line Items]
Balance as of December 31, 2018	0.3
Prepaid / (Utilized) in 2019
Transfer to CIP in 2019
Effect of foreign currency exchange rate changes
Balance as of June 30, 2019	0.3
Nanchong project in year 2018 [Member]
Long-term Purchase Commitment [Line Items]
Balance as of December 31, 2018	249.2
Prepaid / (Utilized) in 2019
Transfer to CIP in 2019
Effect of foreign currency exchange rate changes	(7.4)
Balance as of June 30, 2019	241.8
Total Projects [Member]
Long-term Purchase Commitment [Line Items]
Balance as of December 31, 2018	502.1
Prepaid / (Utilized) in 2019	0.1
Transfer to CIP in 2019	(7.5)
Effect of foreign currency exchange rate changes	(14.8)
Balance as of June 30, 2019	$ 412.4

XML

Property, plant and equipment, net (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 1,019,605,250		$ 1,019,605,250		$ 958,565,093
Less accumulated depreciation	(221,499,762)		(221,499,762)		(182,623,813)
Property, plant and equipment, net	798,105,488		798,105,488		775,941,280
Capitalized interest expense	1,581,827	$ 568,444	2,326,326	$ 1,829,388
Machinery, equipment and furniture [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	570,806,401		570,806,401		580,735,482
Motor vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	2,270,465		2,270,465		2,658,487
Workshops and buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	154,524,398		154,524,398		157,976,839
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 292,003,986		$ 292,003,986		$ 217,194,285

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Basis of presentation and significant concentrations and risks (Tables)

9 Months Ended

Sep. 30, 2019

Basis of presentation, significant concentrations and risks [Abstract]

Schedule of Sales Concentrations by Major Distributors

The Company sells its products primarily through approved distributors in the People's Republic of China (the "PRC"). The Company's sales are highly concentrated. Sales to distributors individually exceeded 10% of the Company's revenues for the three-month and nine-month periods ended September 30, 2019 and 2018, are as follows:

	Three-Month Period Ended September 30,
	2019					2018
	US$		%			US$		%
Distributor A, located in PRC		48,354,258		13.0	%		43,675,493		14.8	%
Distributor B, located in PRC		41,236,907		11.1	%		38,087,744		12.8	%
Distributor C, located in PRC		31,224,911		8.4	%		34,620,819		11.6	%
Total		120,816,076		32.5	%		116,384,056		39.2	%

	Nine-Month Period Ended September 30,
	2019					2018
	US$		%			US$		%
Distributor A, located in PRC		163,355,649		14.4	%		136,172,680		14.7	%
Distributor B, located in PRC		115,842,572		10.2	%		114,870,175		12.4	%
Distributor C, located in PRC		86,271,299		7.6	%		105,340,424		11.4	%
Total		365,469,520		32.2	%		356,383,279		38.5	%

Schedule of Cash and Cash Equivalents

Cash and cash equivalents and short-term restricted cash mentioned below maintained at banks consist of the following:

	September 30, 2019		December 31, 2018
		US$		US$
Renminbi (“RMB”) denominated bank deposits with:
Financial Institutions in the PRC		235,011,468		366,773,172
Financial Institutions in Hong Kong Special Administrative Region ("Hong Kong SAR")		—		8,134
United States (“U.S.”) dollar denominated bank deposits with:
Financial Institution in the U.S.		16,730		40,390
Financial Institutions in the PRC		16,930		17,050
Financial Institution in Hong Kong SAR		78,930		131,892
Financial Institution in Macau Special Administrative Region ("Macau SAR")		910		6,144
Financial Institution in Dubai, UAE		3,518		14,464
Hong Kong dollar denominated bank deposits with:
Financial institution in Hong Kong SAR		8,290		156
Dirham denominated bank deposits with:
Financial institution in Dubai, UAE		19,966		438

XML

Property, plant and equipment, net (Tables)

9 Months Ended

Sep. 30, 2019

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Property, plant and equipment consist of the following:

	September 30, 2019			December 31, 2018
		US$			US$
Machinery, equipment and furniture		570,806,401			580,735,482
Motor vehicles		2,270,465			2,658,487
Workshops and buildings		154,524,398			157,976,839
Construction in progress		292,003,986			217,194,285
Total property, plant and equipment		1,019,605,250			958,565,093
Less accumulated depreciation		(221,499,762	)		(182,623,813	)
Property, plant and equipment, net		798,105,488			775,941,280

Schedule of the Allocation of Depreciation Expense on Property, Plant and Equipment

For the three-month and nine-month periods ended September 30, 2019 and 2018, the Company capitalized US$1,581,827 and US$568,444, and US$2,326,326 and US$1,829,388 of interest costs as a component of the cost of construction in progress. Depreciation expense on property, plant and equipment was allocated to the following expense items:

	Three-Month Period Ended September 30,
	2019		2018
	US$		US$
Cost of revenues		13,251,745		9,219,288
General and administrative expenses		524,249		804,011
Research and development expenses		887,462		978,117
Selling expenses		1,107		1,332
Total depreciation expense		14,664,563		11,002,748

	Nine-Month Period Ended September 30,
	2019		2018
	US$		US$
Cost of revenues		40,232,815		28,098,227
General and administrative expenses		1,730,020		2,405,381
Research and development expenses		2,855,749		2,954,445
Selling expenses		3,384		4,162
Total depreciation expense		44,821,968		33,462,215

XML

Related party transactions (Tables)

9 Months Ended

Sep. 30, 2019

Related Party Transactions [Abstract]

Schedule of Significant Related Party Transactions

The related party transactions are summarized as follows:

	Three-Month Period Ended September 30,						Nine-Month Period Ended September 30,
	2019			2018			2019			2018
	US$			US$			US$			US$
Transactions with related parties:
Revenues resulting from transactions with a related party:
Sales to Macromolecule Composite Materials (v)		734,895			—			1,040,485			—
Financing transactions with related parties:
Investment received in advance from Changmu (i)		—			—			—			75,567,512
Refund of investment received in advance to Changmu (i)		—			(75,567,512	)		—			(75,567,512	)
Proceeds of interest-free advances from Changmu (i)		—			3,779,509			—			3,779,509
Interest-free advances from Mr. Jie Han (ii)		—			1,162,926			2,920,049			1,162,926
Repayment of interest-free advances from Mr. Jie Han (ii)		(116,802	)		—			(116,802	)		—
Interest-free advances from Mr. Jie Han’s son(ii)		8,760,147			726,830			8,760,147			726,830
Interest-free advances from senior management employee in HLJ Xinda Group and Sichuan Xinda (iii)		—			8,587,164			275,234			8,587,164
Repayment of interest-free advances from senior management employees in HLJ Xinda Group and Sichuan Xinda (iii)		(292,005	)		—			(4,679,484	)		—
Interest-free advances from Mr. Qingwei Ma (iv)		4,526,076			—			4,526,076			—
Repayment of interest-free advances from Mr. Qingwei Ma (iv)		(730,012	)		—			(730,012	)		—
Interest-free advances from Macromolecule Composite Materials (v)		—			—			63,488,212			—
Repayment of interest-free advances from Macromolecule Composite Materials (v)		(2,935,570	)		—			(63,017,445	)		—
Total financing transactions with related parties		9,211,834			(61,311,083	)		11,425,975			14,256,429

Schedule of Related Parties Balances

The related party balances are summarized as follows:

	September 30, 2019		December 31, 2018
		US$		US$
Amounts due to related parties:
Mr. Jie Han		12,328,748		9,907,915
Mr. Jie Han’s wife		3,101,479		3,180,965
Mr. Jie Han’s son		9,190,007		728,523
Senior management employees in HLJ Xinda Group and Sichuan Xinda		148,530		4,548,335
Mr. Qingwei Ma		3,676,003		—
Total amounts due to related parties		28,444,767		18,365,738

(i) On July 14, 2018, Xinda Holding (HK) entered into a subscription intent agreement with Changmu Investment (Beijing) Company Limited (“Changmu”), a company wholly controlled by Mr. Tiexin Han, the son of Mr. Jie Han, the Chief Executive Officer and Chairman of the Company. Pursuant to the terms of the agreement, HLJ Xinda Group received RMB500.0 million (equivalent to US$75.6 million) from Changmu on June 29, 2018 as deposits in order to subscribe newly authorized registered capital of HLJ Xinda Group subject to further negotiations. Due to the inability to reach agreement on the terms, both parties agreed not to proceed with any definitive agreement. Therefore, HLJ Xinda Group refunded the investment received in advance from Changmu in September 2018.

(ii) During the nine-month ended September 30, 2018, the Company received RMB8.0 million (equivalent to US$1.2 million) from Mr. Jie Han, the Chairman of the Company, and RMB5.0 million (equivalent to US$0.7 million) from Mr. Tiexin Han, the son of Mr. Jie Han, as interest-free advances to the Company.

(iii) In August 2018, the Company received RMB10.0 million (equivalent to US$1.5 million) each from three senior management employees (Messers Junjie Ma, Yuchong Jia, Guangjun Jiao) of Sichuan Xinda as interest-free advances to Sichuan Xinda. During the nine-month period ended September 30, 2018, the Company also received RMB29.1 million (equivalent to US$4.2 million) from a senior management employee (Mr. Rujun Dai) of HLJ Xinda Group as interest-free advances to HLJ Xinda Group.

(iv) During the nine-month period ended September 30, 2019, the Company received RMB31.0 million (equivalent to US$4.5 million) from Qingwei Ma, the Chief Operating Officer of the Company, as interest-free advances to the Company, and repaid RMB5.0 million (equivalent to US$0.7 million). As of September 30, 2019, the amounts due to Mr. Qingwei Ma was RMB26.0 million (equivalent to US$3.7 million).

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Income tax

9 Months Ended

Sep. 30, 2019

Income Tax Disclosure [Abstract]

Income tax

Note 11– Income tax

Pursuant to an approval from the local tax authority in July 2013, Sichuan Xinda, a subsidiary of China XD, became a qualified enterprise located in the western region of the PRC, which entitled it to a preferential income tax rate of 15% from January 1, 2013 to December 31, 2020. Under the current laws of Dubai, Dubai Xinda, a subsidiary of China XD, is exempted from income taxes.

The effective income tax rates for the nine-month periods ended September 30, 2019 and 2018 were 14.8% and 12.9%, respectively. The effective income tax rate increased from 12.9% for the nine-month period ended September 30, 2018 to 14.8% for the nine-month period ended September 30, 2019, primarily due to the decrease of Sichuan Xinda’s profit before tax (“PBT”) percentage within the consolidating entities. The effective income tax rate for the nine-month period ended September 30, 2019 differs from the PRC statutory income tax rate of 25% primarily due to Sichuan Xinda's preferential income tax rate, the reversal of the unrecognized tax benefits accrued in year 2013 and 75% additional deduction of R&D expenses of the major PRC operating entities.

US$3,572,637 previously unrecognized tax benefits accrued in year 2013 and the related accrued interest amounting to US$3,116,216 were reversed due to the expiration of five-year tax assessment period on May 31, 2019. As of September 30, 2019, the unrecognized tax benefits were US$33,663,442 and the interest relating to unrecognized tax benefits was US$12,376,126, of which the unrecognized tax benefits in year 2014 amounting to US$5,578,390 and related accrued interest amounting to US$4,351,145 were classified as current liabilities as the five-year tax assessment period will expire on May 31, 2020. No penalties expense related to unrecognized tax benefits were recorded. The Company is currently unable to provide an estimate of a range of the total amount of unrecognized tax benefits that is reasonably possible to change significantly within the next twelve months.

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Losses on foreign currency option contracts

9 Months Ended

Sep. 30, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Losses on foreign currency option contracts

Note 7 – Losses on foreign currency option contracts

On February 24, 2017, the Company entered into two foreign currency option contracts with Bank of China ("BOC"), Harbin Branch, pursuant to which the Company and BOC both have options to excise the foreign currency contracts depending on the future currency fluctuation, and the nominal values are US$5.0 million and US$10.0 million, respectively, with the defined exchange rates for settlement on March 15, 2018. The Company recognized losses on the above foreign currency option contracts amounting to US$0.5 million in the nine-month period ended September 30, 2018.

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Basis of presentation and significant concentrations and risks (Policies)

9 Months Ended

Sep. 30, 2019

Basis of presentation, significant concentrations and risks [Abstract]

Basis of presentation

(a) Basis of presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted as permitted by rules and regulations of the United States Securities and Exchange Commission ("SEC"). The condensed consolidated balance sheet as of December 31, 2018 was derived from the audited consolidated financial statements of China XD Plastics Company Limited ("China XD") and subsidiaries (collectively, the "Company"). The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated balance sheet of the Company as of December 31, 2018, and the related consolidated statements of comprehensive income, changes in equity and cash flows for the year then ended, included in the Company's Annual Report on Form 10-K filed with the SEC on April 15, 2019.

In the opinion of the management, all adjustments (which include normal recurring adjustments) necessary to present a fair statement of the financial position as of September 30, 2019, the results of operations and cash flows for the nine-month periods ended September 30, 2019 and 2018, have been made.

The preparation of condensed consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include the recoverability of the carrying amounts of property, plant and equipment, the realizability of inventories, the useful lives of property, plant and equipment, the collectability of accounts receivable, the fair values of stock-based compensation awards, the accruals for tax uncertainties and other contingencies, and the discount rate used to determine the present value of the lease payments. The current economic environment has increased the degree of uncertainty inherent in those estimates and assumptions.

Accounting Pronouncement Adopted in 2019

(b) Accounting pronouncement adopted in 2019

In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842) ("ASU 2016-02"). The new guidance requires the recognition of lease assets and liabilities for operating leases with terms of more than 12 months, in addition to those currently recorded, on the Company’s consolidated balance sheets. Presentation of leases within the consolidated statements of comprehensive income and consolidated statements of cash flows will be generally consistent with the current lease accounting guidance. The Company has adopted this ASU on January 1, 2019 using a modified retrospective approach by recognizing a cumulative-effect adjustment to the opening balance of retained earnings. This adoption approach resulted in a balance sheet presentation that was not be comparable to the prior period in the first year of adoption. Additionally, the Company used the package of practical expedients that allowed the Company to not reassess: (1) whether any expired or existing contracts are or contain leases, (2) lease classification for any expired or existing leases and (3) initial direct costs for any expired or existing leases. The Company also elected the hindsight practical expedient to determine the reasonably certain lease term for existing leases. The adoption of the standard resulted in recognition of right-of-use (“ROU”) assets and lease liabilities of approximately US$16.1 million and US$16.8 million, respectively, as of January 1, 2019. The difference between the initial operating right-of-use asset and operating lease liability of US$0.7 million was accrued rent previously recognized under ASC 840. There was no cumulative effect on retained earnings as of January 1, 2019 as a result of adoption.

In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (“ASU 2018-02”). The new guidance allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act and will improve the usefulness of information reported to financial statement users. The Company has adopted the standard on January 1, 2019, and there was no material impact on its consolidated financial statements as a result of the adoption.

In June 2018, the FASB issued ASU No. 2018-07, Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting (“ASU 2018-07”). The new guidance largely aligns the accounting for share-based awards issued to employees and nonemployees. Existing guidance for employee awards will apply to non-employee share-based transactions with limited exceptions. The new guidance also clarifies that any share based payment awards issued to customers should be evaluated under ASC 606, Revenue from Contracts with Customers. The Company has adopted the standard on January 1, 2019, and there was no material impact on its consolidated financial statements as a result of the adoption.

Significant concentrations and risks

(c) Significant concentrations and risks

Sales concentration

The Company sells its products primarily through approved distributors in the People's Republic of China (the "PRC"). The Company's sales are highly concentrated. Sales to distributors individually exceeded 10% of the Company's revenues for the three-month and nine-month periods ended September 30, 2019 and 2018, are as follows:

	Three-Month Period Ended September 30,
	2019					2018
	US$		%			US$		%
Distributor A, located in PRC		48,354,258		13.0	%		43,675,493		14.8	%
Distributor B, located in PRC		41,236,907		11.1	%		38,087,744		12.8	%
Distributor C, located in PRC		31,224,911		8.4	%		34,620,819		11.6	%
Total		120,816,076		32.5	%		116,384,056		39.2	%

	Nine-Month Period Ended September 30,
	2019					2018
	US$		%			US$		%
Distributor A, located in PRC		163,355,649		14.4	%		136,172,680		14.7	%
Distributor B, located in PRC		115,842,572		10.2	%		114,870,175		12.4	%
Distributor C, located in PRC		86,271,299		7.6	%		105,340,424		11.4	%
Total		365,469,520		32.2	%		356,383,279		38.5	%

The Company expects revenues from these distributors to continue to represent a substantial portion of its revenue in the future. Any factor adversely affecting the automobile industry in the PRC or the business operations of these customers will have a material effect on the Company's business, financial position and results of operations.

Purchase concentration of raw materials and equipment

The principal raw materials used for the Company's production of modified plastics products are plastic resins, such as polypropylene, ABS and nylon. The Company purchases substantially all of its raw materials through a limited number of distributors.  Raw material purchases from these distributors, which individually exceeded 10% of the Company's total raw material purchases, accounted for approximately 31.6% (three distributors) and 43.2% (four distributors) for the three-month periods ended September 30, 2019 and 2018, respectively, and 32.6% (three distributors) and 20.4% (two distributors) of the Company's total raw materials purchases for the nine-month periods ended September 30, 2019 and 2018, respectively. Management believes that other suppliers could provide similar raw materials on comparable terms. A change in suppliers, however, could cause a delay in manufacturing and a possible loss of sales, which would adversely affect the Company's business, financial position and results of operations.

Cash concentration

Cash and cash equivalents and short-term restricted cash mentioned below maintained at banks consist of the following:

	September 30, 2019		December 31, 2018
		US$		US$
Renminbi (“RMB”) denominated bank deposits with:
Financial Institutions in the PRC		235,011,468		366,773,172
Financial Institutions in Hong Kong Special Administrative Region ("Hong Kong SAR")		—		8,134
United States (“U.S.”) dollar denominated bank deposits with:
Financial Institution in the U.S.		16,730		40,390
Financial Institutions in the PRC		16,930		17,050
Financial Institution in Hong Kong SAR		78,930		131,892
Financial Institution in Macau Special Administrative Region ("Macau SAR")		910		6,144
Financial Institution in Dubai, UAE		3,518		14,464
Hong Kong dollar denominated bank deposits with:
Financial institution in Hong Kong SAR		8,290		156
Dirham denominated bank deposits with:
Financial institution in Dubai, UAE		19,966		438

The bank deposits with financial institutions in the PRC are insured by the government authority for up to RMB500,000. The bank deposits with financial institutions in the Hong Kong SAR are insured by the government authority for up to HK$500,000. The bank deposits with financial institutions in the Macau SAR are insured by the government authority for up to MOP$500,000. The bank deposits with financial institutions in the Dubai, UAE are not insured by the government authority. Total bank deposits amounting to US$1,372,734 and US$1,442,481 were insured as of September 30, 2019 and December 31, 2018, respectively. The Company has not experienced any losses in uninsured bank deposits and does not believe that it is exposed to any significant risks on cash held in bank accounts. To limit exposure to credit risk, the Company primarily places bank deposits with large financial institutions in the PRC, Hong Kong SAR, Macau SAR and Dubai, UAE with acceptable credit rating.

Cash deposits in bank that are restricted as to withdrawal or usage for up to 12 months are reported as restricted cash in the consolidated balance sheets.

Short-term bank deposits that are pledged as collateral for bills payable relating to purchases of raw materials are reported as restricted cash and amounted to US$129,879,525 and US$202,568,664 as of September 30, 2019 and December 31, 2018, respectively. Upon maturity and repayment of the bills payable, which is generally within 6 months, the cash becomes available for use by the Company.

Short-term bank deposits that are related to government grant are reported as restricted cash and amounted to US$1,430,537 and US$1,469,935 as of September 30, 2019 and December 31, 2018, respectively. 

Short-term bank deposits that are pledged as collateral for issuance of letter of guarantee are reported as restricted cash amounted to US$42,575,237 and US$70,885,301 as of September 30, 2019 and December 31, 2018, respectively.

Short-term bank deposits that are pledged as repayment to settle US$45.0 million of syndicated loans obtained from Standard Chartered Bank are reported as restricted cash and amounted to US$49,348,194 and US$50,766,123 as of September 30, 2019 and December 31, 2018, respectively.

Short-term bank deposits that are pledged as collateral to settle US$14.9 million of short-term bank loans obtained from Postal Savings Bank of China are reported as restricted cash and amounted to US$1,413,847 and nil as of September 30, 2019 and December 31, 2018, respectively.

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Revenues

9 Months Ended

Sep. 30, 2019

Revenues [Abstract]

Revenues

Note 19 - Revenues

Revenues consist of the following:

	Three-Month Period Ended September 30,				Nine-Month Period Ended September 30,
	2019		2018		2019		2018
	US$		US$		US$		US$
Modified Polyamide 66 (PA66)		120,234,670		72,832,370		296,372,085		242,690,994
Modified Polyamide 6 (PA6)		78,940,503		54,018,912		250,529,646		180,317,333
Plastic Alloy		66,353,485		76,511,378		200,901,936		234,487,071
Modified Polypropylene (PP)		32,666,069		60,923,190		110,518,373		158,280,180
Modified Acrylonitrile Butadiene Styrene (ABS)		12,437,078		6,299,771		40,662,342		23,128,606
Polyoxymethylenes (POM)		2,053,799		2,881,985		6,953,161		7,753,725
Polyphenylene Oxide (PPO)		5,490,232		2,425,361		31,482,628		13,215,599
Polylactide (PLA)		17,525,906		20,854,274		46,789,233		64,583,387
Polyethylene (PE)		4,103,483		—		7,707,560		—
Work in progress		33,062,822		—		145,362,837		—
Raw materials		291,044		477,499		419,177		550,398
Total Revenue		373,159,091		297,224,740		1,137,698,978		925,007,293

The following table provides sales by major customer group for the three-month and nine-month periods ended September 30, 2019 and 2018:

	Three-month Period Ended September 30,				Nine-month Period Ended September 30,
	2019		2018		2019		2018
	US$		US$		US$		US$
Distributor		312,919,940		292,507,429		918,602,515		911,068,381
Direct customers		59,948,107		4,239,812		218,677,286		13,388,514
Others		291,044		477,499		419,177		550,398
Total		373,159,091		297,224,740		1,137,698,978		925,007,293

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Stockholders' equity

9 Months Ended

Sep. 30, 2019

Stockholders' Equity Note [Abstract]

Stockholders' equity

Note 15 – Stockholders' equity

The changes of each caption of stockholders' equity for the nine-month period ended September 30, 2019 are as follows:

	Series B Preferred Stock				Common Stock											Accumulated
	Number of Shares		Amount		Number of Shares		Amount		Treasury Stock			Additional Paid-in Capital		Retained Earnings		Other Comprehensive Loss			Total Stockholders' Equity
			US$				US$		US$			US$		US$		US$			US$
Balance at January 1, 2019		1,000,000		100		50,948,841		5,097		(92,694	)		86,633,582		717,103,890		(54,732,547	)		748,917,428
Net income		-		-		-		-		-			-		68,057,245		-			68,057,245
Series D Preferred Stock converted to common stock		-		-		16,000,000		1,600		-			97,574,865		-		-			97,576,465
Other comprehensive income - Foreign currency translation adjustment, net of nil income taxes		-		-		-		-		-			-		-		(24,732,543	)		(24,732,543	)
Balance as of September 30, 2019		1,000,000		100		66,948,841		6,697		(92,694	)		184,208,447		785,161,135		(79,465,090	)		889,818,595

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Deferred Income (Details)	1 Months Ended		9 Months Ended
	Jan. 31, 2015 USD ($)	Jan. 31, 2015 CNY (¥)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 CNY (¥)	Sep. 30, 2019 CNY (¥)
Fund Support Agreement With Shunqing Government [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, agreement amount | $	$ 49,500,000		$ 13,800,000
Government grant related to construction in the form of repayment of bank loan on behalf of the Company by the government | $			3,600,000
Government grant related to the construction of Sichuan plant in the form of restricted cash | $
Government grant, funds received till date | $			47,100,000
Additional government grant received | $			5,100,000
Additional government grant received recognized as other income | $			2,300,000
Fund Support Agreement With Shunqing Government [Member] | China, Yuan Renminbi [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, agreement amount | ¥		¥ 350,000,000		¥ 97,100,000
Government grant related to construction in the form of repayment of bank loan on behalf of the Company by the government | ¥				25,500,000
Government grant related to the construction of Sichuan plant in the form of restricted cash | ¥
Government grant, funds received till date | ¥					¥ 333,200,000
Additional government grant received | ¥				36,000,000
Additional government grant received recognized as other income | ¥				¥ 16,400,000
Ministry of Finance of the People's Republic of China [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, funds received till date | $			900,000
Ministry of Finance of the People's Republic of China [Member] | China, Yuan Renminbi [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, funds received till date | ¥					6,400,000
Ministry of Science and Technology [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, funds received till date | $			300,000
Ministry of Science and Technology [Member] | China, Yuan Renminbi [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, funds received till date | ¥					2,200,000
Harbin Bureau of Finance for Biomedical [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, funds received till date | $			$ 6,400,000
Harbin Bureau of Finance for Biomedical [Member] | China, Yuan Renminbi [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, funds received till date | ¥					¥ 45,000,000

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Related Party Transactions (Narrative) (Details)		9 Months Ended
		Sep. 30, 2019 USD ($)	Sep. 30, 2019 CNY (¥)	Sep. 30, 2019 CNY (¥)	Apr. 30, 2019 USD ($)	Apr. 30, 2019 CNY (¥)	Apr. 22, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 CNY (¥)	Sep. 30, 2018 USD ($)	Sep. 30, 2018 CNY (¥)	Aug. 31, 2018 USD ($)	Aug. 31, 2018 CNY (¥)	Jul. 14, 2018 USD ($)	Jul. 14, 2018 CNY (¥)
Receivable, Related Parties	[1]							$ 7,285,231
Due to Related Parties		28,444,767						18,365,738
China, Yuan Renminbi [Member]
Receivable, Related Parties		63,500,000
Mr. Jie Han [Member]
Receivable, Related Parties		2,900,000								$ 1,200,000				$ 75,600,000
Repayment of Amount of Related Parties		100,000
Due to Related Parties	[2]	12,300,000						9,907,915
Mr. Jie Han [Member] | China, Yuan Renminbi [Member]
Receivable, Related Parties | ¥				¥ 20,000,000							¥ 8,000,000				¥ 500,000,000
Repayment of Amount of Related Parties | ¥			¥ 800,000
Due to Related Parties | ¥				87,200,000
Changmu [Member]
Receivable, Related Parties										3,800,000
Changmu [Member] | China, Yuan Renminbi [Member]
Receivable, Related Parties | ¥											26,000,000
Mr. Tiexin Han [Member]
Receivable, Related Parties								$ 700,000
Due from Related Parties		8,800,000
Due to Related Parties		9,200,000
Mr. Tiexin Han [Member] | China, Yuan Renminbi [Member]
Receivable, Related Parties | ¥									¥ 5,000,000
Due from Related Parties | ¥				60,000,000
Due to Related Parties | ¥				6,500,000
Sichuan Xinda [Member]
Receivable, Related Parties												$ 1,500,000
Sichuan Xinda [Member] | China, Yuan Renminbi [Member]
Receivable, Related Parties | ¥													¥ 10,000,000
Senior Management [Member]
Receivable, Related Parties					$ 4,400,000					$ 4,200,000
Senior Management [Member] | China, Yuan Renminbi [Member]
Receivable, Related Parties | ¥						¥ 30,000,000					¥ 29,100,000
Mr. Rujun Dai [Member]
Receivable, Related Parties		300,000
Repayment of Amount of Related Parties		300,000
Due from Related Parties		100,000
Mr. Rujun Dai [Member] | China, Yuan Renminbi [Member]
Receivable, Related Parties | ¥				1,900,000
Repayment of Amount of Related Parties | ¥			2,000,000
Due from Related Parties | ¥				1,100,000
Qingwei Ma [Member]
Receivable, Related Parties		4,500,000
Repayment of Amount of Related Parties		700,000
Due from Related Parties		3,700,000
Qingwei Ma [Member] | China, Yuan Renminbi [Member]
Receivable, Related Parties | ¥				31,000,000
Repayment of Amount of Related Parties | ¥			¥ 5,000,000
Due from Related Parties | ¥				26,000,000
Macromolecule Composite Materials [Member]
Receivable, Related Parties		434,400,000					$ 1,000,000
Interest rate							97.50%
Due from Related Parties		278,370
Advance from Macromolecule Composite Materials [Member]
Receivable, Related Parties		$ 63,000,000
Advance from Macromolecule Composite Materials [Member] | China, Yuan Renminbi [Member]
Receivable, Related Parties | ¥				¥ 431,600,000

[1] On December 18, 2018, HLJ Xinda Group entered into an agreement with Mr. Xiaohui Gao, General Manager of Heilongjiang Xinda Enterprise Group Shanghai New Materials Sales Company Limited ("Shanghai Sales"), to transfer Shanghai Sales from HLJ Xinda Group to Mr. Gao for a total consideration of RMB50.0 million (equivalent to US$7.4 million). Pursuant to the contract, the Company completed the legal transfer on December 19, 2018 and the full consideration of US$7.4 million was received on April 11, 2019. The cash received was included in the cash flows from investing activities for the nine-month period ended September 30, 2019.

[2] During the year ended December 31, 2018, the Company received RMB68.0 million (equivalent to US$9.5 million) from Mr. Jie Han, the Chairman of the Company, RMB21.8 million (equivalent to US$3.1 million) from Ms. Limei Sun, the wife of Mr. Jie Han, and RMB5.0 million (equivalent to US$0.7 million) from Mr. Tiexin Han, the son of Mr. Jie Han, as interest-free advances to the Company.

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Stockholders' equity (Tables)

9 Months Ended

Sep. 30, 2019

Stockholders' Equity Note [Abstract]

Schedule of Changes in Stockholders' Equity

The changes of each caption of stockholders' equity for the nine-month period ended September 30, 2019 are as follows:

	Series B Preferred Stock				Common Stock											Accumulated
	Number of Shares		Amount		Number of Shares		Amount		Treasury Stock			Additional Paid-in Capital		Retained Earnings		Other Comprehensive Loss			Total Stockholders' Equity
			US$				US$		US$			US$		US$		US$			US$
Balance at January 1, 2019		1,000,000		100		50,948,841		5,097		(92,694	)		86,633,582		717,103,890		(54,732,547	)		748,917,428
Net income		-		-		-		-		-			-		68,057,245		-			68,057,245
Series D Preferred Stock converted to common stock		-		-		16,000,000		1,600		-			97,574,865		-		-			97,576,465
Other comprehensive income - Foreign currency translation adjustment, net of nil income taxes		-		-		-		-		-			-		-		(24,732,543	)		(24,732,543	)
Balance as of September 30, 2019		1,000,000		100		66,948,841		6,697		(92,694	)		184,208,447		785,161,135		(79,465,090	)		889,818,595

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Basis of presentation, significant concentrations and risks (Sales and Purchase Concentration) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Concentration Risk [Line Items]
Revenues	$ 373,159,091	$ 297,224,740	$ 1,137,698,978	$ 925,007,293
Customer Concentration Risk [Member] | Revenues [Member] | Distributor A, located in PRC [Member]
Concentration Risk [Line Items]
Revenues	$ 48,354,258	$ 43,675,493	$ 163,355,649	$ 136,172,680
Concentration risk, percentage	13.00%	14.80%	14.40%	14.70%
Customer Concentration Risk [Member] | Revenues [Member] | Distributor B, located in PRC [Member]
Concentration Risk [Line Items]
Revenues	$ 41,236,907	$ 38,087,744	$ 115,842,572	$ 114,870,175
Concentration risk, percentage	11.10%	12.80%	10.20%	12.40%
Customer Concentration Risk [Member] | Revenues [Member] | Distributor C, located in PRC [Member]
Concentration Risk [Line Items]
Revenues	$ 31,224,911	$ 34,620,819	$ 86,271,299	$ 105,340,424
Concentration risk, percentage	8.40%	11.60%	7.60%	11.40%
Customer Concentration Risk [Member] | Revenues [Member] | Major Distributors Aggregate [Member]
Concentration Risk [Line Items]
Revenues	$ 120,816,076	$ 116,384,056	$ 365,469,520	$ 356,383,279
Concentration risk, percentage	32.50%	39.20%	32.20%	38.50%
Raw Materials Supplier Concentration Risk [Member] | Purchase of Raw Materials [Member] | Major Raw Materials Distributors [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	31.60%	43.20%	32.60%	20.40%

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Inventories (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Inventory, Net [Abstract]
Raw materials and work in progress	$ 690,531,879	$ 612,701,274
Finished goods	8,470,679	7,331,921
Total inventories	$ 699,002,558	$ 620,033,195

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Borrowings (Current) (Narrative) (Details)	1 Months Ended	9 Months Ended
	Nov. 29, 2019 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 CNY (¥)	Sep. 30, 2019 CNY (¥)	Dec. 31, 2018	May 31, 2018 USD ($)	May 31, 2018 CNY (¥)	Oct. 31, 2017 USD ($)	Oct. 31, 2017 CNY (¥)	Jul. 31, 2017 USD ($)	Jul. 31, 2017 CNY (¥)
Short-term Debt [Line Items]
Weighted average interest rate		4.80%		4.80%	4.70%
Initial term of loan		1 year	1 year
Thirteen Month Secured loan [Member]
Short-term Debt [Line Items]
Aggregated principal amount		$ 63,600,000
Debt instrument, interest rate		4.35%		4.35%
Repaid amount of loan		$ 63,600,000
Accounts receivable released		37,400,000
Thirteen Month Secured loan [Member] | China, Yuan Renminbi [Member]
Short-term Debt [Line Items]
Aggregated principal amount | ¥				¥ 450,000,000
Repaid amount of loan | ¥			¥ 450,000,000
Accounts receivable released | ¥			¥ 264,800,000
One Year Secured Loan [Member] | Bank of China [Member]
Short-term Debt [Line Items]
Aggregated principal amount								$ 5,000,000		$ 14,000,000
Debt instrument, interest rate								2.50%	2.50%	2.50%	2.50%
One Year Secured Loan [Member] | Bank of China [Member] | Transaction One [Member]
Short-term Debt [Line Items]
Aggregated principal amount								$ 5,500,000
Debt instrument, interest rate								2.50%	2.50%
One Year Secured Loan [Member] | Loans secured by restricted cash [Member]
Short-term Debt [Line Items]
Aggregated principal amount								$ 5,500,000		$ 15,600,000
One Year Secured Loan [Member] | Loans secured by restricted cash [Member] | Transaction One [Member]
Short-term Debt [Line Items]
Aggregated principal amount								$ 6,100,000
One Year Secured Loan [Member] | China, Yuan Renminbi [Member] | Loans secured by restricted cash [Member]
Short-term Debt [Line Items]
Aggregated principal amount | ¥									¥ 37,500,000		¥ 107,000,000
One Year Secured Loan [Member] | China, Yuan Renminbi [Member] | Loans secured by restricted cash [Member] | Transaction One [Member]
Short-term Debt [Line Items]
Aggregated principal amount | ¥									¥ 42,000,000
Three-month secured short-term loan [Member] | Loans secured by restricted cash [Member]
Short-term Debt [Line Items]
Aggregated principal amount						$ 42,600,000
Three-month secured short-term loan [Member] | Loans secured by restricted cash [Member] | Subsequent Event [Member]
Short-term Debt [Line Items]
Repaid amount of loan	$ 135,000,000
Three-month secured short-term loan [Member] | Standard Chartered Bank [Member]
Short-term Debt [Line Items]
Aggregated principal amount						$ 45,000,000
Debt instrument, interest rate						1.50%	1.50%
Three-month secured short-term loan [Member] | China, Yuan Renminbi [Member] | Loans secured by restricted cash [Member]
Short-term Debt [Line Items]
Aggregated principal amount | ¥							¥ 300,000,000
Nine-month secured short-term loan [Member] | Loans secured by restricted cash [Member]
Short-term Debt [Line Items]
Aggregated principal amount		1,400,000
Nine-month secured short-term loan [Member] | Postal Savings Bank of China [Member]
Short-term Debt [Line Items]
Aggregated principal amount		$ 14,100,000
Debt instrument, interest rate		4.35%		4.35%
Nine-month secured short-term loan [Member] | China, Yuan Renminbi [Member] | Loans secured by restricted cash [Member]
Short-term Debt [Line Items]
Aggregated principal amount | ¥				¥ 10,000,000
Nine-month secured short-term loan [Member] | China, Yuan Renminbi [Member] | Postal Savings Bank of China [Member]
Short-term Debt [Line Items]
Aggregated principal amount | ¥				¥ 100,000,000

XML

Prepayments to equipment and construction suppliers (Narrative) (Details)		1 Months Ended												9 Months Ended		12 Months Ended
		May 30, 2019 USD ($)	May 30, 2019 CNY (¥)	Sep. 30, 2018 USD ($)	Sep. 30, 2018 CNY (¥)	Jul. 31, 2018 USD ($) T	Jun. 25, 2018 T	Mar. 31, 2018 USD ($)	Mar. 31, 2018 CNY (¥)	Dec. 31, 2017 USD ($) a	Jul. 21, 2017 a T	Mar. 17, 2017 USD ($) a T	Mar. 17, 2017 CNY (¥) a T	Sep. 30, 2019 USD ($) T	Sep. 30, 2019 CNY (¥) T	Dec. 31, 2017 USD ($)	Dec. 31, 2017 CNY (¥)	Sep. 30, 2019 CNY (¥)	Aug. 06, 2019 CNY (¥)	May 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Nov. 30, 2018 USD ($)	Nov. 30, 2018 CNY (¥)	Jul. 31, 2018 CNY (¥)	Jul. 12, 2018 USD ($)	Jul. 12, 2018 CNY (¥)	Jun. 30, 2018 USD ($)	Jun. 21, 2018 USD ($)	Jun. 21, 2018 CNY (¥)	Dec. 31, 2017 CNY (¥)	Mar. 17, 2017 CNY (¥)	Nov. 15, 2016 USD ($)	Nov. 15, 2016 CNY (¥)	Oct. 20, 2016 USD ($)	Oct. 20, 2016 CNY (¥)
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers														$ 436,326,962							$ 530,636,319
Receivable, Related Parties	[1]																				7,285,231
China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Receivable, Related Parties														63,500,000
Sichuan Xinda [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers														17,100,000
Sichuan Xinda [Member] | Construction in progress [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers														10,400,000
Sichuan Xinda [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Bio-composite material | T												300,000	300,000
Prepayments to equipment suppliers														1,300,000														$ 241,800,000				$ 17,100,000
Total consideration										$ 110,600,000						$ 110,600,000												$ 268,700,000				37,400,000
Prepaid												$ 244,400,000
Sichuan Xinda [Member] | Equipment [Member] | Construction in progress [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers																																$ 10,400,000
Sichuan Xinda [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers | ¥																		¥ 120,900,000
Sichuan Xinda [Member] | China, Yuan Renminbi [Member] | Construction in progress [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers | ¥																		74,000,000
Sichuan Xinda [Member] | China, Yuan Renminbi [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers | ¥																		9,400,000											¥ 1,710,100,000				¥ 120,900,000
Total consideration | ¥																													¥ 1,900,100,000	¥ 782,200,000			264,300,000
Prepaid | ¥													¥ 1,728,900,000
Sichuan Xinda [Member] | China, Yuan Renminbi [Member] | Equipment [Member] | Construction in progress [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers | ¥																																	¥ 74,000,000
Hailezi [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers	[2]													412,405,158							$ 502,087,116
Total consideration										40,100,000						40,100,000
Prepayments to be refunded from termination of contracts																1,800,000
Refunded amount in agreement										52,200,000						52,200,000
Refund of prepayment														3,000,000
Receivable, Related Parties																						$ 500,000
Hailezi [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers										87,900,000						87,900,000
Prepayments to be refunded from termination of contracts				$ 241,000,000				$ 241,000,000
Hailezi [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Total consideration | ¥																														283,700,000
Prepayments to be refunded from termination of contracts | ¥																	¥ 12,400,000
Refunded amount in agreement | ¥																														369,100,000
Refund of prepayment | ¥															¥ 20,800,000
Receivable, Related Parties | ¥																							¥ 3,200,000
Hailezi [Member] | China, Yuan Renminbi [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers | ¥																														621,600,000
Prepayments to be refunded from termination of contracts | ¥					¥ 1,704,900,000				¥ 1,704,900,000
HLJ Xinda Group [Member]
Long-term Purchase Commitment [Line Items]
Prepaid		$ 100,000												$ 35,800,000
HLJ Xinda Group [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Bio-composite material | T						300,000	300,000				300,000			300,000	300,000
Prepayments to equipment suppliers														$ 130,200,000											$ 163,600,000
Net capital expenditures														75,000,000
Total consideration						$ 269,600,000								132,900,000
Prepaid														76,600,000
Remaining amount of prepaid prepayments														55,200,000
HLJ Xinda Group [Member] | Property, Plant and Equipment [Member]
Long-term Purchase Commitment [Line Items]
Bio-composite material | T											100,000
Area of property | a											41.2
HLJ Xinda Group [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Prepaid | ¥			¥ 1,000,000												¥ 253,500,000
Receivable, Related Parties | ¥																			¥ 108,300,000
HLJ Xinda Group [Member] | China, Yuan Renminbi [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers | ¥																		920,900,000								¥ 1,157,000,000
Net capital expenditures | ¥																		530,800,000
Total consideration | ¥																		939,700,000						¥ 1,906,800,000
Prepaid | ¥															¥ 541,500,000
Remaining amount of prepaid prepayments | ¥																		390,100,000
Nanchong Project [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers														241,800,000
Nanchong Project [Member] | Property, Plant and Equipment [Member]
Long-term Purchase Commitment [Line Items]
Bio-composite material | T												20,000	20,000
Area of property | a												41.2	41.2
Net capital expenditures												$ 353,500,000
Refunded amount in agreement												241,000,000
Remaining amount of prepaid prepayments												$ 3,400,000
Nanchong Project [Member] | China, Yuan Renminbi [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers | ¥																		1,710,100,000
Nanchong Project [Member] | China, Yuan Renminbi [Member] | Property, Plant and Equipment [Member]
Long-term Purchase Commitment [Line Items]
Net capital expenditures | ¥																															¥ 2,500,000,000
Refunded amount in agreement | ¥																															1,704,900,000
Remaining amount of prepaid prepayments | ¥																															¥ 24,000,000
Green River [Member] | Workshops and buildings [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers										$ 15,800,000				15,800,000		15,800,000
Area of property | a										13,972.64
Total consideration										$ 31,600,000						$ 31,600,000
Green River [Member] | China, Yuan Renminbi [Member] | Workshops and buildings [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers | ¥																		108,300,000												108,300,000
Total consideration | ¥																														¥ 216,600,000
Peaceful [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers	[3]													16,860,609													$ 4,936,983
Peaceful [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers														4,800,000						$ 18,800,000
Total consideration																																		$ 12,700,000
Prepaid														$ 12,100,000
Peaceful [Member] | China, Yuan Renminbi [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers | ¥																		¥ 33,900,000
Total consideration | ¥																																			¥ 89,800,000

[1] On December 18, 2018, HLJ Xinda Group entered into an agreement with Mr. Xiaohui Gao, General Manager of Heilongjiang Xinda Enterprise Group Shanghai New Materials Sales Company Limited ("Shanghai Sales"), to transfer Shanghai Sales from HLJ Xinda Group to Mr. Gao for a total consideration of RMB50.0 million (equivalent to US$7.4 million). Pursuant to the contract, the Company completed the legal transfer on December 19, 2018 and the full consideration of US$7.4 million was received on April 11, 2019. The cash received was included in the cash flows from investing activities for the nine-month period ended September 30, 2019.

[2] On September 26, 2016 and February 28, 2017, HLJ Xinda Group entered into equipment purchase contracts with Hailezi for a total consideration of RMB782.2 million (equivalent to US$110.6 million) to purchase storage facility and other equipment, which will be used for upgrading the storage system of warehouse located in Harbin, China. Pursuant to the contract with Hailezi, HLJ Xinda Group prepaid RMB621.6 million (equivalent to US$87.9 million) during the first quarter of 2017. Due to a redesign of outdoor storage facility in June 2017, HLJ Xinda Group entered into a supplementary agreement with Hailezi, which decreased the original contract amount to RMB283.7 million (equivalent to US$40.1 million). Hailezi refunded RMB369.1 million (equivalent to US$52.2 million) to HLJ Xinda Group on June 22, 2017. In May 2019, HLJ Xinda Group has prepaid another RMB1.0 million (equivalent to US$0.1 million). As of September 30, 2019, HLJ Xinda Group has prepaid RMB253.5 million (equivalent to US$35.8 million).

[3] On October 20, 2016, Sichuan Xinda entered into an equipment purchase contract with Peaceful Treasure Limited ("Peaceful") for a total consideration of RMB89.8 million (equivalent to US$12.7 million) to purchase certain production and testing equipment. The Company prepaid RMB33.9 million (equivalent to US$4.8 million) as of September 30, 2019.

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Inventories

9 Months Ended

Sep. 30, 2019

Inventory, Net [Abstract]

Inventories

Note 3 – Inventories

Inventories consist of the following:

		September 30, 2019			December 31, 2018
	US$			US$
Raw materials and work in progress			690,531,879			612,701,274
Finished goods			8,470,679			7,331,921
Total inventories			699,002,558			620,033,195

There were no write down of inventories for the three-month and nine-month periods ended September 30, 2019 and 2018.

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Leases (Narrative) (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Leases [Abstract]
Operating lease term for land and office	expiring from 2022 through 2037
Weighted average remaining lease term	17 years 6 months
Weighted average discount rate	6.70%
Rental expenses incurred for operating leases of plant and equipment and office spaces		$ 2,455,509

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Leases (Schedule of Future Minimum Lease Commitments) (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Operating Leases
2019	$ 346,192
2020	1,386,124
2021	1,408,598
2022	1,408,979
2023	1,424,857
Thereafter	22,023,858
Total remaining lease payments	27,998,608
Less: Imputed interest	(12,094,615)
Total operating lease liabilities	15,903,993
Less: current portion	(1,390,531)
Non-current operating lease liabilities	$ 14,513,462
Weighted-average remaining lease term	17 years 6 months
Weighted-average discount rate	6.70%

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Redeemable Series D convertible preferred stock (Details)	9 Months Ended
	Sep. 30, 2019 shares
Common Stock [Member]
Stockholders Equity [Line Items]
Series D Preferred Stock converted to common stock, shares	16,000,000

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Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Nov. 08, 2019
Document And Entity Information Abstract
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Entity Registrant Name	China XD Plastics Co Ltd
Entity Central Index Key	0001353970
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2019
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Units Outstanding		66,948,841
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	NV
Entity File Number	000-53131
Document Quarterly Report	true
Document Transition Report	false

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Earnings per share (Summary of Potentially Dilutive Securities) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Convertible Preferred Stock Series D [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares issuable upon conversion of stock	15,130,435	16,000,000	15,706,960	16,000,000

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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net cash (used in) provided by operating activities	$ (183,155,418)	$ 115,513,922
Cash flows from investing activities:
Purchase of and deposits for property, plant and equipment	(54,255,192)	(430,839,423)
Refund of prepayment for building purchase	15,810,261
Net proceeds from sales of a subsidiary	7,296,921
Proceeds from maturity of time deposits		517,686,072
Purchase of time deposits		(236,428,396)
Refund of deposit from equipment suppliers		121,464,390
Deposits for acquisition of equity		(3,640,688)
Refund of deposits for acquisition of equity		15,577,880
Government grant related to the construction of Sichuan plant		10,324,859
Net cash used in investing activities	(31,148,010)	(5,855,306)
Cash flows from financing activities:
Proceeds from bank borrowings	1,647,171,688	719,994,473
Repayments of bank borrowings	(1,569,203,033)	(757,018,030)
Proceeds from interest-free advances from related parties	79,969,718	14,256,429
Repayments of interest-free advances from related parties	(68,543,743)
Investment received in advance from a related party		75,567,512
Refund of investment received in advance from a related party		(75,567,512)
Net cash provided by (used in) financing activities	89,394,630	(22,767,128)
Effect of foreign currency exchange rate changes on cash, cash equivalents and restricted cash	(6,926,300)	(19,528,082)
Net (decrease) increase in cash, cash equivalents and restricted cash	(131,835,098)	67,363,406
Cash, cash equivalents and restricted cash at beginning of period	366,991,840	320,091,665
Cash, cash equivalents and restricted cash at end of period	235,156,742	387,455,071
Supplemental disclosure of cash flow information:
Interest paid, net of capitalized interest	46,534,262	35,067,228
Income taxes paid	7,951,724	16,866,842
Non-cash investing activities:
Accrual for purchase of equipment and construction included in accrued expenses and other current liabilities	1,794,800	5,825,800
Non-cash financing activities:
Conversion of Series D preferred stock to common stock	$ 97,576,465

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Accrued expenses and other current liabilities

9 Months Ended

Sep. 30, 2019

Accrued Liabilities, Current [Abstract]

Accrued expenses and other current liabilities

Note 9 – Accrued expenses and other current liabilities

Accrued expenses and other current liabilities consist of the following:

	September 30, 2019		December 31, 2018
		US$		US$
Payables for purchase of property, plant and equipment		14,038,643		53,059,897
Accrued freight expenses		14,341,777		25,908,990
Accrued interest expenses		10,012,097		8,873,532
Contract liabilities (i)		16,248,016		16,105,245
Non income tax payables		4,617,298		6,425,236
Payables to Macromolecule Composite Materials (ii)		19,422,453		—
Others (iii)		19,822,979		16,553,998
Total accrued expenses and other current liabilities		98,503,263		126,926,898

(i) Contract liabilities mainly represent the advance received from customers in the PRC for the finished goods and raw materials purchases as of September 30, 2019. The change in contract liabilities primarily represents the cash received, less amounts recognized as revenues during the period.

(ii) As of September 30, 2019, the Company owed Heilongjiang Xinda Macromolecule Composite Materials Company Limited (“Macromolecule Composite Materials”) US$19.4 million, which was subsequently settled in October 2019.

(iii) Others mainly represent accrued payroll and employee benefits, accrued audit and consulting fees, electricity fee and other accrued miscellaneous operating expenses.

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Property, plant and equipment, net

9 Months Ended

Sep. 30, 2019

Property, Plant and Equipment [Abstract]

Property, plant and equipment, net

Note 5 – Property, plant and equipment, net

Property, plant and equipment consist of the following:

	September 30, 2019			December 31, 2018
		US$			US$
Machinery, equipment and furniture		570,806,401			580,735,482
Motor vehicles		2,270,465			2,658,487
Workshops and buildings		154,524,398			157,976,839
Construction in progress		292,003,986			217,194,285
Total property, plant and equipment		1,019,605,250			958,565,093
Less accumulated depreciation		(221,499,762	)		(182,623,813	)
Property, plant and equipment, net		798,105,488			775,941,280

For the three-month and nine-month periods ended September 30, 2019 and 2018, the Company capitalized US$1,581,827 and US$568,444, and US$2,326,326 and US$1,829,388 of interest costs as a component of the cost of construction in progress. Depreciation expense on property, plant and equipment was allocated to the following expense items:

	Three-Month Period Ended September 30,
	2019		2018
	US$		US$
Cost of revenues		13,251,745		9,219,288
General and administrative expenses		524,249		804,011
Research and development expenses		887,462		978,117
Selling expenses		1,107		1,332
Total depreciation expense		14,664,563		11,002,748

	Nine-Month Period Ended September 30,
	2019		2018
	US$		US$
Cost of revenues		40,232,815		28,098,227
General and administrative expenses		1,730,020		2,405,381
Research and development expenses		2,855,749		2,954,445
Selling expenses		3,384		4,162
Total depreciation expense		44,821,968		33,462,215

XML

Other non-current liabilities

9 Months Ended

Sep. 30, 2019

Other Liabilities, Noncurrent [Abstract]

Other non-current liabilities

Note 13 – Other non-current liabilities

	September 30,		December 31,
	2019		2018
		US$		US$
Income tax payable-noncurrent (i)		89,976,096		92,461,068
Deferred income tax liabilities		5,062,698		6,716,921
Others		—		2,395,783
Total other non-current liabilities		95,038,794		101,573,772

(i) Income tax payable-noncurrent represents the repatriation tax, the accumulative balance of unrecognized tax benefits since 2015 and related accrued interest. According to the Tax Cuts and Jobs Act enacted on December 22, 2017, the management recognized the amount of U.S. tax corporate income tax is US$70,965,148 based on the deemed repatriation to the United States of accumulated earnings mandated by the U.S. tax reform, US$17,031,636 of which due payable in 2018 and 2019 was classified as current liabilities.

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Inventories (Tables)

9 Months Ended

Sep. 30, 2019

Inventory, Net [Abstract]

Schedule of Inventories

Inventories consist of the following:

		September 30, 2019			December 31, 2018
	US$			US$
Raw materials and work in progress			690,531,879			612,701,274
Finished goods			8,470,679			7,331,921
Total inventories			699,002,558			620,033,195

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Borrowings (Tables)

9 Months Ended

Sep. 30, 2019

Debt Disclosure [Abstract]

Schedule of Short-term Loans

The Company has credit facilities with several banks under which they draw short-term and long-term bank loans as described below.

(a)  Current

	September 30,		December 31,
	2019		2018
		US$		US$
Unsecured loans		310,183,942		418,198,508
Loans secured by accounts receivable		63,623,125		65,567,082
Loans secured by restricted cash		59,138,472		69,500,000
Current portion of long-term bank loans (note b)		186,577,210		176,401,330
Total short-term loans, including current portion of long-term bank loans		619,522,749		729,666,920

Schedule of Long-Term Debt

The loan was secured by restricted cash of RMB10.0 million (equivalent to US$1.4 million) in Postal Savings Bank of China.

(b) Non-current

	September 30, 2019			December 31, 2018
		US$			US$
Secured loans		72,652,556			2,177,985
Unsecured loans		300,443,100			196,031,589
Syndicate loan facility		90,000,000			90,000,000
Less: current portion		(186,577,210	)		(176,401,330	)
Total long-term bank loans, excluding current portion		276,518,446			111,808,244

Maturities on long-term bank loans

Maturities on long-term bank loans (including current portion) are as follows:

	September 30, 2019
		US$
2019		181,410,945
2020		10,332,528
2021		105,060,291
2022		40,023,319
After 2022		126,268,573
Total		463,095,656

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Leases

9 Months Ended

Sep. 30, 2019

Leases [Abstract]

Leases

Note 21 - Leases

As discussed in Note 1, effective January 1, 2019, the Company adopted Topic 842. At the inception of a contract, the Company determines if the arrangement is, or contains, a lease. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent its obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. Rent expense is recognized on a straight-line basis over the lease term.

The Company has made certain accounting policy elections whereby it does not recognize ROU assets or lease liabilities for short-term leases (those with original terms of 12-months or less). All of the Company’s existing leases as of September 30, 2019 were classified as operating leases. As of September 30, 2019, the Company had operating leases for land and office with remaining terms expiring from 2022 through 2037 and a weighted average remaining lease term of 17.5 years. Weighted average discount rate used in the calculation of the lease liabilities was 6.7%. The discount rate reflects the estimated incremental borrowing rate, which includes an assessment of the credit rating to determine the rate that the Company would have to pay to borrow, on a collateralized basis for a similar term, an amount equal to the lease payments in a similar economic environment.

Lease cost for the nine-month period ended September 30, 2019 is as follows:

	Nine-Month Period Ended September 30,
	2019
		US$
Operating lease cost		1,271,455
Short-term lease cost		432,124
Total lease cost		1,703,579

As of September 30, 2019, the maturities of the operating lease liabilities are as follows:

	Remaining Lease Payments US$
2019	346,192
2020	1,386,124
2021	1,408,598
2022	1,408,979
2023	1,424,857
Thereafter	22,023,858
Total remaining lease payments	27,998,608
Less:  imputed interest	(12,094,615	)
Total operating lease liabilities	15,903,993
Less: current portion	(1,390,531	)
Non-current operating lease liabilities	14,513,462
Weighted-average remaining lease term	17.5 years
Weighted-average discount rate	6.7	%

Supplemental cash flow information related to leases is as follows:

	Nine-Month Period Ended September 30,
Supplemental disclosure of cash flow information:	2019
		US$
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases		1,707,618
Right-of-use assets obtained in exchange for new lease liabilities:
Operating lease		16,075,213

As previously disclosed in the consolidated financial statement for the year ended December 31, 2018 and under the previous lease standard (Topic 840), future minimum annual lease payments for the years subsequent to December 31, 2018 and in aggregate are as follows:

	US$
Years ended December 31,
2019		2,174,439
2020		1,486,007
2021		1,486,007
2022		1,446,251
2023		1,482,593
Thereafter		21,176,139

Rental expenses incurred for operating leases of plant and equipment and office spaces were US$2,455,509 in 2018.

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Earnings per share

9 Months Ended

Sep. 30, 2019

Earnings per common share:

Earnings per share

Note 17 - Earnings per share

Basic and diluted earnings per share are calculated as follows:

	Three-Month Period Ended September 30,						Nine-Month Period Ended September 30,
	2019			2018			2019			2018
	US$			US$			US$			US$
Net income		16,965,213			8,964,941			68,057,245			55,288,920
Less:
Earnings allocated to participating Series D convertible preferred stock		(3,834,137	)		(2,140,971	)		(15,967,004	)		(13,257,752	)
Earnings allocated to participating nonvested shares		—			(8,904	)		—			(106,113	)
Net income for basic and diluted earnings per share		13,131,076			6,815,066			52,090,241			41,925,055
Denominator
Denominator for basic earnings per share		51,818,406			50,930,653			51,241,881			50,596,880
Dilutive effect of outstanding share options		—			32,944			—			32,944
Denominator for diluted earnings per share		51,818,406			50,963,597			51,241,881			50,629,824
Earnings per share:
Basic and diluted		0.25			0.13			1.02			0.83

The following table summarizes potentially dilutive securities excluded from the calculation of diluted earnings per share for the three-month periods and nine-month periods ended September 30, 2019 and 2018 because their effects are anti-dilutive:

	Three-Month Period Ended September 30,				Nine-Month Period Ended September 30,
	2019		2018		2019		2018
Shares issuable upon conversion of Series D convertible preferred stock		15,130,435		16,000,000		15,706,960		16,000,000

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Revenues (Tables)

9 Months Ended

Sep. 30, 2019

Revenues [Abstract]

Revenues

Revenues consist of the following:

	Three-Month Period Ended September 30,				Nine-Month Period Ended September 30,
	2019		2018		2019		2018
	US$		US$		US$		US$
Modified Polyamide 66 (PA66)		120,234,670		72,832,370		296,372,085		242,690,994
Modified Polyamide 6 (PA6)		78,940,503		54,018,912		250,529,646		180,317,333
Plastic Alloy		66,353,485		76,511,378		200,901,936		234,487,071
Modified Polypropylene (PP)		32,666,069		60,923,190		110,518,373		158,280,180
Modified Acrylonitrile Butadiene Styrene (ABS)		12,437,078		6,299,771		40,662,342		23,128,606
Polyoxymethylenes (POM)		2,053,799		2,881,985		6,953,161		7,753,725
Polyphenylene Oxide (PPO)		5,490,232		2,425,361		31,482,628		13,215,599
Polylactide (PLA)		17,525,906		20,854,274		46,789,233		64,583,387
Polyethylene (PE)		4,103,483		—		7,707,560		—
Work in progress		33,062,822		—		145,362,837		—
Raw materials		291,044		477,499		419,177		550,398
Total Revenue		373,159,091		297,224,740		1,137,698,978		925,007,293

The following table provides sales by major customer group for the three-month and nine-month periods ended September 30, 2019 and 2018:

	Three-month Period Ended September 30,				Nine-month Period Ended September 30,
	2019		2018		2019		2018
	US$		US$		US$		US$
Distributor		312,919,940		292,507,429		918,602,515		911,068,381
Direct customers		59,948,107		4,239,812		218,677,286		13,388,514
Others		291,044		477,499		419,177		550,398
Total		373,159,091		297,224,740		1,137,698,978		925,007,293

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Accounts receivable (Schedule of Accounts Receivable) (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Accounts receivable	$ 326,868,747	$ 294,726,804
Allowance for doubtful accounts	(37,374)	(38,516)
Accounts receivable, net	326,831,373	294,688,288
Notes receivable	335,142	27,392
Accounts receivable pledged as collateral for short-term bank loans	$ 37,431,712	$ 94,581,170

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Related Party Transactions (Schedule of Related Parties Balances) (Details) - USD ($)		Sep. 30, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Amounts due to a related party		$ 28,444,767	$ 18,365,738
Mr. Jie Han [Member]
Related Party Transaction [Line Items]
Amounts due to a related party	[1]	12,300,000	9,907,915
Mr. Jie Han's wife [Member]
Related Party Transaction [Line Items]
Amounts due to a related party	[1]	3,101,479	3,180,965
Mr. Jie Han's son [Member]
Related Party Transaction [Line Items]
Amounts due to a related party	[1]	9,190,007	728,523
Senior Managements [Member]
Related Party Transaction [Line Items]
Amounts due to a related party	[2]	148,530	4,548,335
Mr. Qingwei Ma [Member]
Related Party Transaction [Line Items]
Amounts due to a related party	[3]	$ 3,676,003

[1] During the year ended December 31, 2018, the Company received RMB68.0 million (equivalent to US$9.5 million) from Mr. Jie Han, the Chairman of the Company, RMB21.8 million (equivalent to US$3.1 million) from Ms. Limei Sun, the wife of Mr. Jie Han, and RMB5.0 million (equivalent to US$0.7 million) from Mr. Tiexin Han, the son of Mr. Jie Han, as interest-free advances to the Company.

[2] In August 2018, the Company received RMB10.0 million (equivalent to US$1.5 million) each from three senior management employees (Messers Junjie Ma, Yuchong Jia, Guangjun Jiao) of Sichuan Xinda as interest-free advances to Sichuan Xinda. During the nine-month period ended September 30, 2018, the Company also received RMB29.1 million (equivalent to US$4.2 million) from a senior management employee (Mr. Rujun Dai) of HLJ Xinda Group as interest-free advances to HLJ Xinda Group.

[3] During the nine-month period ended September 30, 2019, the Company received RMB31.0 million (equivalent to US$4.5 million) from Qingwei Ma, the Chief Operating Officer of the Company, as interest-free advances to the Company, and repaid RMB5.0 million (equivalent to US$0.7 million). As of September 30, 2019, the amounts due to Mr. Qingwei Ma was RMB26.0 million (equivalent to US$3.7 million).

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Borrowings (Non-current) (Narrative) (Details)		1 Months Ended																																															9 Months Ended					12 Months Ended
	Dec. 09, 2016 USD ($)	Dec. 30, 2023 USD ($)	Dec. 30, 2023 CNY (¥)	Dec. 30, 2022 USD ($)	Dec. 30, 2022 CNY (¥)	Dec. 20, 2022 USD ($)	Dec. 20, 2022 CNY (¥)	Jun. 30, 2022 USD ($)	Jun. 30, 2022 CNY (¥)	Jun. 20, 2022 USD ($)	Jun. 20, 2022 CNY (¥)	Dec. 30, 2021 USD ($)	Dec. 30, 2021 CNY (¥)	Dec. 20, 2021 USD ($)	Dec. 20, 2021 CNY (¥)	Jun. 30, 2021 USD ($)	Jun. 30, 2021 CNY (¥)	Jun. 20, 2021 USD ($)	Jun. 20, 2021 CNY (¥)	Dec. 30, 2020 USD ($)	Dec. 30, 2020 CNY (¥)	Oct. 28, 2020 USD ($)	Oct. 28, 2020 CNY (¥)	Jun. 30, 2020 USD ($)	Jun. 30, 2020 CNY (¥)	Apr. 28, 2020 USD ($)	Apr. 28, 2020 CNY (¥)	Dec. 30, 2019 USD ($)	Dec. 30, 2019 CNY (¥)	Nov. 29, 2019 USD ($)	Oct. 28, 2019 USD ($)	Oct. 28, 2019 CNY (¥)	Jun. 30, 2019 USD ($)	Jun. 30, 2019 AED (د.إ)	Jun. 17, 2019 USD ($)	Apr. 28, 2019 USD ($)	Apr. 28, 2019 CNY (¥)	Dec. 26, 2018 USD ($)	Dec. 26, 2018 AED (د.إ)	Oct. 28, 2018 USD ($)	Oct. 28, 2018 CNY (¥)	Aug. 22, 2018 USD ($)	Dec. 31, 2017 USD ($)	Oct. 28, 2017 USD ($)	Oct. 28, 2017 CNY (¥)	Apr. 28, 2017 USD ($)	Apr. 28, 2017 CNY (¥)	Mar. 23, 2017 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 CNY (¥)	Sep. 30, 2019 AED (د.إ)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)	Oct. 02, 2019 USD ($)	Sep. 30, 2019 CNY (¥)	Jun. 17, 2019 CNY (¥)	Jan. 31, 2019 USD ($)	Jan. 31, 2019 CNY (¥)	Dec. 26, 2018 AED (د.إ)	Jan. 30, 2018 USD ($)	Jan. 30, 2018 CNY (¥)	Dec. 31, 2017 CNY (¥)	Mar. 23, 2017 CNY (¥)	Dec. 09, 2016 CNY (¥)
Debt Instrument [Line Items]
Initial term of loan																																																	1 year	1 year	1 year
Three Five Year Unsecured Loan [Member] | Unsecured Debt from Bank of China [Member]
Debt Instrument [Line Items]
Aggregated principal amount																																																	$ 36,800,000
Debt instrument, interest rate																																																	4.75%							4.75%
Three Five Year Unsecured Loan [Member] | Unsecured Debt from Bank of China [Member] | China, Yuan Renminbi [Member]
Debt Instrument [Line Items]
Aggregated principal amount | ¥																																																								¥ 260,000,000
One Four Year Unsecured Loans [Member] | Unsecured Debt from Bank of China [Member]
Debt Instrument [Line Items]
Aggregated principal amount																																																	$ 11,300,000
Debt instrument, interest rate																																																	4.75%							4.75%
One Four Year Unsecured Loans [Member] | Unsecured Debt from Bank of China [Member] | China, Yuan Renminbi [Member]
Debt Instrument [Line Items]
Aggregated principal amount | ¥																																																								¥ 80,000,000
Long term unsecured loan [Member] | Unsecured Debt from Bank of China [Member]
Debt Instrument [Line Items]
Repayment of long-term debt																																				$ 3,500,000				$ 24,700,000				$ 24,700,000					$ 10,600,000
Long term unsecured loan [Member] | Unsecured Debt from Bank of China [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Repayment of long-term debt																						$ 10,600,000				$ 2,800,000					$ 24,700,000
Long term unsecured loan [Member] | Unsecured Debt from Bank of China [Member] | China, Yuan Renminbi [Member]
Debt Instrument [Line Items]
Repayment of long-term debt | ¥																																					¥ 25,000,000				¥ 175,000,000				¥ 175,000,000					¥ 75,000,000
Long term unsecured loan [Member] | Unsecured Debt from Bank of China [Member] | China, Yuan Renminbi [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Repayment of long-term debt | ¥																							¥ 75,000,000				¥ 20,000,000					¥ 175,000,000
Long term unsecured loan [Member] | Bank of China [Member]
Debt Instrument [Line Items]
Debt instrument, issuer	Bank of China																																															Bank of China
Aggregated principal amount	$ 4,200,000																																															$ 3,500,000
Debt instrument, interest rate	4.75%																																															4.75%																4.75%	4.75%
Repayment of long-term debt																																														$ 1,400,000
Long term unsecured loan [Member] | Bank of China [Member] | China, Yuan Renminbi [Member]
Debt Instrument [Line Items]
Aggregated principal amount | ¥																																																																¥ 25,000,000	¥ 30,000,000
Repayment of long-term debt | ¥																																															¥ 10,000,000
Long term unsecured loan [Member] | Longjiang Bank, Harbin Branch [Member]
Debt Instrument [Line Items]
Debt instrument, issuer																																			Longjiang Bank, Harbin Branch														Longjiang Bank, Harbin Branch	Longjiang Bank, Harbin Branch	Longjiang Bank, Harbin Branch
Aggregated principal amount																																			$ 84,800,000														$ 31,100,000
Debt instrument, interest rate																																			5.635%														5.635%							5.635%	5.635%
Long term unsecured loan [Member] | Longjiang Bank, Harbin Branch [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Repayment of long-term debt						$ 28,200,000				$ 28,200,000				$ 14,200,000				$ 14,200,000
Long term unsecured loan [Member] | Longjiang Bank, Harbin Branch [Member] | China, Yuan Renminbi [Member]
Debt Instrument [Line Items]
Aggregated principal amount | ¥																																																								¥ 219,600,000	¥ 600,000,000
Long term unsecured loan [Member] | Longjiang Bank, Harbin Branch [Member] | China, Yuan Renminbi [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Repayment of long-term debt | ¥							¥ 200,000,000				¥ 200,000,000				¥ 100,000,000				¥ 100,000,000
Seven-year unsecured loan [Member] | Longjiang Bank, Harbin Branch [Member]
Debt Instrument [Line Items]
Debt instrument, issuer																																											Longjiang Bank, Harbin Branch
Initial term of loan																																											7 years
Aggregated principal amount																																											$ 74,400,000											$ 74,400,000							$ 23,900,000
Debt instrument, interest rate																																											4.90%											4.90%							4.90%	4.90%	4.90%
Repayment of long-term debt																																																	$ 2,100,000
Seven-year unsecured loan [Member] | Longjiang Bank, Harbin Branch [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Repayment of long-term debt		$ 38,200,000		$ 12,700,000				$ 12,700,000				$ 9,900,000				$ 9,900,000				$ 5,000,000				$ 5,000,000				$ 2,800,000
Seven-year unsecured loan [Member] | Longjiang Bank, Harbin Branch [Member] | China, Yuan Renminbi [Member]
Debt Instrument [Line Items]
Aggregated principal amount | ¥																																																														¥ 169,100,000	¥ 526,300,000
Repayment of long-term debt | ¥																																																		¥ 15,000,000
Seven-year unsecured loan [Member] | Longjiang Bank, Harbin Branch [Member] | China, Yuan Renminbi [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Repayment of long-term debt | ¥			¥ 270,400,000		¥ 90,000,000				¥ 90,000,000				¥ 70,000,000				¥ 70,000,000				¥ 35,000,000				¥ 35,000,000				¥ 20,000,000
Four long-term unsecured loans [Member] | Nanchong Shuntou Development Group Co. Ltd. [Member]
Debt Instrument [Line Items]
Debt instrument, issuer																																																						Nanchong Shuntou Development Group Co., Ltd.
Aggregated principal amount																																											$ 60,800,000											$ 60,800,000
Debt instrument, maturity date																																																						Sep. 30, 2019
Debt instrument, interest rate																																											4.35%											4.35%									4.35%
Four long-term unsecured loans [Member] | Nanchong Shuntou Development Group Co. Ltd. [Member] | China, Yuan Renminbi [Member]
Debt Instrument [Line Items]
Aggregated principal amount | ¥																																																															¥ 430,000,000
Consortium of banks and financial institutions led by Standard Chartered Bank [Member]
Debt Instrument [Line Items]
Debt instrument, issuer																																																	Standard Chartered Bank (Hong Kong) Limited	Standard Chartered Bank (Hong Kong) Limited	Standard Chartered Bank (Hong Kong) Limited
Aggregated principal amount																																																	$ 180,000,000
Debt instrument, issuance date																																																	Aug. 22, 2016	Aug. 22, 2016	Aug. 22, 2016
Repayment of long-term debt																																										$ 90,000,000							$ 49,300,000			$ 90,000,000	$ 90,000,000
Consortium of banks and financial institutions led by Standard Chartered Bank [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Aggregated principal amount																																																							$ 135,000,000
Repayment of long-term debt																														$ 135,000,000
Consortium of banks and financial institutions led by Standard Chartered Bank [Member] | China, Yuan Renminbi [Member]
Debt Instrument [Line Items]
Repayment of long-term debt | ¥																																																		¥ 349,000,000
Five Year Secured Loan [Member] | National Bank of Umm Al Qaiwain [Member]
Debt Instrument [Line Items]
Aggregated principal amount																																						$ 2,200,000
Debt instrument, interest rate																																						2.35%																						2.35%
Spread over variable rate																																						3.75%	3.75%
Security Deposit																																						$ 2,400,000
Repayment of long-term debt																																																	$ 200,000
Five Year Secured Loan [Member] | National Bank of Umm Al Qaiwain [Member] | Ten Half-Yearly Installments [Member]
Debt Instrument [Line Items]
Repayment of long-term debt																																	$ 200,000					$ 200,000
Five Year Secured Loan [Member] | National Bank of Umm Al Qaiwain [Member] | United Arab Emirates, Dirhams [Member]
Debt Instrument [Line Items]
Aggregated principal amount | د.إ																																																												د.إ 8,000,000
Security Deposit | د.إ																																																												د.إ 8,800,000
Repayment of long-term debt | د.إ																																																			د.إ 800,000
Five Year Secured Loan [Member] | National Bank of Umm Al Qaiwain [Member] | United Arab Emirates, Dirhams [Member] | Ten Half-Yearly Installments [Member]
Debt Instrument [Line Items]
Repayment of long-term debt | د.إ																																		د.إ 800,000					د.إ 800,000
Two Year Secured Loan [Member] | China Construction Bank [Member]
Debt Instrument [Line Items]
Aggregated principal amount																																																										$ 70,700,000
Two Year Secured Loan [Member] | China Construction Bank [Member] | China, Yuan Renminbi [Member]
Debt Instrument [Line Items]
Aggregated principal amount | ¥																																																											¥ 500,000,000

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Other non-current liabilities (Details) - USD ($)		Sep. 30, 2019	Dec. 31, 2018
Other Liabilities, Noncurrent [Abstract]
Income tax payable-noncurrent	[1]	$ 89,976,096	$ 92,461,068
Deferred income tax liabilities		5,062,698	6,716,921
Others			2,395,783
Total other non-current liabilities		$ 95,038,794	$ 101,573,772

[1] Income tax payable-noncurrent represents the repatriation tax, the accumulative balance of unrecognized tax benefits since 2015 and related accrued interest. According to the Tax Cuts and Jobs Act enacted on December 22, 2017, the management recognized the amount of U.S. tax corporate income tax is US$70,965,148 based on the deemed repatriation to the United States of accumulated earnings mandated by the U.S. tax reform, US$17,031,636 of which due payable in 2018 and 2019 was classified as current liabilities.

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Gains on disposal of a subsidiary

9 Months Ended

Sep. 30, 2019

Discontinued Operations and Disposal Groups [Abstract]

Losses on disposal of a subsidiary

Note 20 - Gains on disposal of a subsidiary

On November 13, 2018, HLJ Xinda Group entered into an agreement with Shanghai Sales, to transfer the wholly owned equity of Heilongjiang Xinda Enterprise Group (Shanghai) New Materials Research and Development Co., Ltd. ("Shanghai New Materials R&D") from HLJ Xinda Group to Shanghai Sales with no consideration as a result of group restructuring to streamline resources and improve operating efficiency.

The legal transfer was completed on February 1, 2019 and the Company recorded gains of US$0.5 million on disposal of Shanghai New Materials R&D for the nine-month period ended September 30, 2019.

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Stock based compensation

9 Months Ended

Sep. 30, 2019

Share-based Payment Arrangement, Noncash Expense [Abstract]

Stock based compensation

Note 16– Stock based compensation

Non-vested shares

The Company recognized nil and US$45,339 of compensation expense in general and administrative expenses relating to non-vested shares for the three-month periods ended September 30, 2019 and 2018, respectively, and nil and US$2,675,115 for the nine-month periods ended September 30, 2019 and 2018, respectively. As of September 30, 2019, there was no unrecognized compensation cost relating to non-vested shares.

Stock options

The Company recognized nil and US$595,044 of share-based compensation expense in general and administrative expenses relating to stock options for the three-month and nine-month periods ended September 30, 2019 and 2018, respectively.

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Leases (Tables)

9 Months Ended

Sep. 30, 2019

Leases [Abstract]

Schedule of Lease Cost

Lease cost for the nine-month period ended September 30, 2019 is as follows:

	Nine-Month Period Ended September 30,
	2019
		US$
Operating lease cost		1,271,455
Short-term lease cost		432,124
Total lease cost		1,703,579

Schedule of Maturities of Operating Lease Liabilities

As of September 30, 2019, the maturities of the operating lease liabilities are as follows:

	Remaining Lease Payments US$
2019	346,192
2020	1,386,124
2021	1,408,598
2022	1,408,979
2023	1,424,857
Thereafter	22,023,858
Total remaining lease payments	27,998,608
Less:  imputed interest	(12,094,615	)
Total operating lease liabilities	15,903,993
Less: current portion	(1,390,531	)
Non-current operating lease liabilities	14,513,462
Weighted-average remaining lease term	17.5 years
Weighted-average discount rate	6.7	%

Schedule of Supplemental Disclosure of Cash Flow Information

Supplemental cash flow information related to leases is as follows:

	Nine-Month Period Ended September 30,
Supplemental disclosure of cash flow information:	2019
		US$
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases		1,707,618
Right-of-use assets obtained in exchange for new lease liabilities:
Operating lease		16,075,213

Schedule of Future Minimum Annual Lease Payments

As previously disclosed in the consolidated financial statement for the year ended December 31, 2018 and under the previous lease standard (Topic 840), future minimum annual lease payments for the years subsequent to December 31, 2018 and in aggregate are as follows:

	US$
Years ended December 31,
2019		2,174,439
2020		1,486,007
2021		1,486,007
2022		1,446,251
2023		1,482,593
Thereafter		21,176,139

XML

Accounts receivable (Schedule of Aging of Accounts Receivable) (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Aging:
current	$ 270,927,987	$ 218,458,862
Total accounts receivable	326,868,747	294,726,804
1-3 months past due [Member]
Aging:
Past due	34,349,372	31,386,341
4-6 months past due [Member]
Aging:
Past due	5,753,489	109,412
7-12 months past due [Member]
Aging:
Past due	15,124,228	42,532,170
Greater than one year past due [Member]
Aging:
Past due	$ 713,671	$ 2,240,019

XML

Other non-current liabilities (Narrative) (Details) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2017
Other Liabilities, Noncurrent [Abstract]
Current income tax expense-US	$ 17,031,636	$ 17,031,636	$ 70,965,148

XML

Related Party Transactions (Schedule of Significant Related Party Transactions) (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Transactions with related parties		$ 9,211,834	$ (61,311,083)	$ 11,425,975	$ 14,256,429
Changmu [Member]
Transactions with related parties	[1]				75,567,512
Refund of investment received in advance to Changmu [Member]
Transactions with related parties	[1]		(75,567,512)		(75,567,512)
Proceeds of interest-free advances from Changmu [Member]
Transactions with related parties	[1]		3,779,509		3,779,509
Mr. Jie Han [Member]
Transactions with related parties	[2]		1,162,926	2,920,049	1,162,926
Repayment of interest-free advances from Mr. Jie Han [Member]
Transactions with related parties	[2]	(116,802)		(116,802)
Interest-free advances from Mr. Jie Han's son [Member]
Transactions with related parties	[2]	8,760,147	726,830	8,760,147	726,830
Senior Managements [Member]
Transactions with related parties	[3]		8,587,164	275,234	8,587,164
HLJ Xinda Group and Sichuan Xinda [Member]
Transactions with related parties	[3]	(292,005)		(4,679,484)
Mr. Qingwei Ma [Member]
Transactions with related parties	[4]	4,526,076		4,526,076
Advances from Mr. Qingwei Ma [Member]
Transactions with related parties	[4]	(730,012)		(730,012)
Macromolecule Composite Materials [Member]
Transactions with related parties	[5]			63,488,212
Revenues transactions with related parties	[5]	734,895		1,040,485
Advance from Macromolecule Composite Materials [Member]
Transactions with related parties	[5]	$ (2,935,570)		$ (63,017,445)

[1] On July 14, 2018, Xinda Holding (HK) entered into a subscription intent agreement with Changmu Investment (Beijing) Company Limited ("Changmu"), a company wholly controlled by Mr. Tiexin Han, the son of Mr. Jie Han, the Chief Executive Officer and Chairman of the Company. Pursuant to the terms of the agreement, HLJ Xinda Group received RMB500.0 million (equivalent to US$75.6 million) from Changmu on June 29, 2018 as deposits in order to subscribe newly authorized registered capital of HLJ Xinda Group subject to further negotiations. Due to the inability to reach agreement on the terms, both parties agreed not to proceed with any definitive agreement. Therefore, HLJ Xinda Group refunded the investment received in advance from Changmu in September 2018.

[2] During the year ended December 31, 2018, the Company received RMB68.0 million (equivalent to US$9.5 million) from Mr. Jie Han, the Chairman of the Company, RMB21.8 million (equivalent to US$3.1 million) from Ms. Limei Sun, the wife of Mr. Jie Han, and RMB5.0 million (equivalent to US$0.7 million) from Mr. Tiexin Han, the son of Mr. Jie Han, as interest-free advances to the Company.

[3] In August 2018, the Company received RMB10.0 million (equivalent to US$1.5 million) each from three senior management employees (Messers Junjie Ma, Yuchong Jia, Guangjun Jiao) of Sichuan Xinda as interest-free advances to Sichuan Xinda. During the nine-month period ended September 30, 2018, the Company also received RMB29.1 million (equivalent to US$4.2 million) from a senior management employee (Mr. Rujun Dai) of HLJ Xinda Group as interest-free advances to HLJ Xinda Group.

[4] During the nine-month period ended September 30, 2019, the Company received RMB31.0 million (equivalent to US$4.5 million) from Qingwei Ma, the Chief Operating Officer of the Company, as interest-free advances to the Company, and repaid RMB5.0 million (equivalent to US$0.7 million). As of September 30, 2019, the amounts due to Mr. Qingwei Ma was RMB26.0 million (equivalent to US$3.7 million).

[5] On December 26, 2018, Shanghai Sales set up Heilongjiang Xinda Macromolecule Composite Materials Company Limited ("Macromolecule Composite Materials"). On April 22, 2019, Shanghai Sales transferred 97.5% equity interest in Macromolecule Composite Materials to Harbin Shengtong Engineering Plastics Co. Ltd. ("Harbin Shengtong"). Mr. Xigang Chen, the general manager of Sichuan Xinda, is the general manager and also the principal shareholder of Harbin Shengtong.

XML

Borrowings (Schedule of Maturities on Long-term Bank Loans Including Current Portion) (Details)	Sep. 30, 2019 USD ($)
Debt Disclosure [Abstract]
2019	$ 181,410,945
2020	10,332,528
2021	105,060,291
2022	40,023,319
After 2022	126,268,573
Total	$ 463,095,656

XML

Losses on foreign currency option contracts (Narrative) (Details) - Bank of China [Member] - USD ($)	9 Months Ended
	Sep. 30, 2019	Feb. 24, 2017
Foreign currency option contracts One [Member]
Derivatives, Fair Value [Line Items]
Nominal values of foreign currency option contracts		$ 5,000,000
Recognized losses on foreign currency option contracts	$ 500,000
Foreign currency option contracts Two [Member]
Derivatives, Fair Value [Line Items]
Nominal values of foreign currency option contracts		$ 10,000,000

XML

Property, plant and equipment, net (Allocated Depreciation Expense) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Property, Plant and Equipment [Line Items]
Total depreciation expense	$ 14,664,563	$ 11,002,748	$ 44,821,968	$ 33,462,215
Cost of revenues [Member]
Property, Plant and Equipment [Line Items]
Total depreciation expense	13,251,745	9,219,288	40,232,815	28,098,227
General and administrative expenses [Member]
Property, Plant and Equipment [Line Items]
Total depreciation expense	524,249	804,011	1,730,020	2,405,381
Research and development expenses [Member]
Property, Plant and Equipment [Line Items]
Total depreciation expense	887,462	978,117	2,855,749	2,954,445
Selling expenses [Member]
Property, Plant and Equipment [Line Items]
Total depreciation expense	$ 1,107	$ 1,332	$ 3,384	$ 4,162

XML

Leases (Schedule of Supplemental Disclosure of Cash Flow Information) (Details)	9 Months Ended
	Sep. 30, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 1,707,618
Right-of-use assets obtained in exchange for new lease liabilities:
Operating lease	$ 16,075,213

XML

Stockholders' equity (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Stockholders Equity [Line Items]
Balance as of January 1, 2019			$ 748,917,428
Net income	$ 16,965,213	$ 8,964,941	68,057,245	$ 55,288,920
Series D Preferred Stock converted to common stock	3,834,137	$ 2,140,971	15,967,004	$ 13,257,752
Other comprehensive income - Foreign currency translation adjustment, net of nil income taxes			(24,732,543)
Balance as of September 30, 2019	889,818,595		889,818,595
Preferred Stock [Member] | Series B Preferred Stock [Member]
Stockholders Equity [Line Items]
Balance as of January 1, 2019			$ 100
Balance as of January 1, 2019, shares			1,000,000
Net income
Series D Preferred Stock converted to common stock
Series D Preferred Stock converted to common stock, shares
Other comprehensive income - Foreign currency translation adjustment, net of nil income taxes
Balance as of September 30, 2019	$ 100		$ 100
Balance as of September 30, 2019, shares	1,000,000		1,000,000
Common Stock [Member]
Stockholders Equity [Line Items]
Balance as of January 1, 2019			$ 5,097
Balance as of January 1, 2019, shares			50,948,841
Net income
Series D Preferred Stock converted to common stock			$ 1,600
Series D Preferred Stock converted to common stock, shares			16,000,000
Other comprehensive income - Foreign currency translation adjustment, net of nil income taxes
Balance as of September 30, 2019	$ 6,697		$ 6,697
Balance as of September 30, 2019, shares	66,948,841		66,948,841
Treasury Stock [Member]
Stockholders Equity [Line Items]
Balance as of January 1, 2019			$ (92,694)
Net income
Series D Preferred Stock converted to common stock
Other comprehensive income - Foreign currency translation adjustment, net of nil income taxes
Balance as of September 30, 2019	$ (92,694)		(92,694)
Additional Paid-in Capital [Member]
Stockholders Equity [Line Items]
Balance as of January 1, 2019			86,633,582
Net income
Series D Preferred Stock converted to common stock			97,574,865
Other comprehensive income - Foreign currency translation adjustment, net of nil income taxes
Balance as of September 30, 2019	184,208,447		184,208,447
Retained Earnings [Member]
Stockholders Equity [Line Items]
Balance as of January 1, 2019			717,103,890
Net income			68,057,245
Series D Preferred Stock converted to common stock
Other comprehensive income - Foreign currency translation adjustment, net of nil income taxes
Balance as of September 30, 2019	785,161,135		785,161,135
Accumulated Other Comprehensive Income (Loss) [Member]
Stockholders Equity [Line Items]
Balance as of January 1, 2019			(54,732,547)
Net income
Series D Preferred Stock converted to common stock
Other comprehensive income - Foreign currency translation adjustment, net of nil income taxes			(24,732,543)
Balance as of September 30, 2019	$ (79,465,090)		$ (79,465,090)

XML

Commitments and contingencies (Narrative) (Details)								1 Months Ended																								4 Months Ended	9 Months Ended		12 Months Ended
		Jun. 10, 2017 USD ($)	Jun. 10, 2017 CNY (¥)	Jun. 09, 2017 USD ($)	Jun. 09, 2017 CNY (¥)	Sep. 06, 2016 USD ($)	Sep. 06, 2016 CNY (¥)	May 31, 2019 AED (د.إ)	Sep. 30, 2018 USD ($)	Sep. 30, 2018 CNY (¥)	Jul. 31, 2018 T	Jun. 25, 2018 USD ($) T	Jun. 25, 2018 CNY (¥) T	Mar. 31, 2018 USD ($)	Mar. 31, 2018 CNY (¥)	Jul. 21, 2017 T	Mar. 31, 2017 USD ($)	Mar. 31, 2017 CNY (¥)	Mar. 30, 2017 USD ($)	Mar. 30, 2017 CNY (¥)	Mar. 17, 2017 T	Feb. 20, 2017 USD ($)	Feb. 20, 2017 CNY (¥)	Nov. 15, 2016 USD ($)	Nov. 15, 2016 CNY (¥)	Oct. 20, 2016 USD ($)	Oct. 20, 2016 CNY (¥)	Apr. 30, 2015 USD ($)	Apr. 30, 2015 AED (د.إ)	Mar. 31, 2013 USD ($)	Mar. 31, 2013 CNY (¥)	Apr. 15, 2019 CNY (¥)	Sep. 30, 2019 USD ($) T	Sep. 30, 2019 CNY (¥) T	Dec. 31, 2018 USD ($)	Dec. 31, 2018 CNY (¥)	Dec. 25, 2018 CNY (¥)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 CNY (¥)	Sep. 30, 2019 CNY (¥)	Sep. 30, 2019 AED (د.إ)	May 31, 2019 USD ($)	Apr. 15, 2019 USD ($)	Apr. 15, 2019 CNY (¥)	Dec. 25, 2018 USD ($)	Dec. 25, 2018 CNY (¥)	Jul. 12, 2018 USD ($)	Jul. 12, 2018 CNY (¥)	Jun. 30, 2018 USD ($)	Jun. 21, 2018 USD ($)	Jun. 21, 2018 CNY (¥)	Dec. 31, 2017 CNY (¥)	Nov. 15, 2016 CNY (¥)	Sep. 06, 2016 CNY (¥)
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers																																	$ 436,326,962		$ 530,636,319
Xinda Holdings HK [Member]
Long-term Purchase Commitment [Line Items]
Purchase Obligation																																	7,700,000
Xinda Holdings HK [Member] | Longjiang Bank, Harbin Branch [Member]
Long-term Purchase Commitment [Line Items]
Loan amount																																											$ 113,100,000
Xinda Holdings HK [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Purchase Obligation | ¥																																								¥ 54,800,000
Xinda Holdings HK [Member] | China, Yuan Renminbi [Member] | Longjiang Bank, Harbin Branch [Member]
Long-term Purchase Commitment [Line Items]
Loan amount | ¥																																												¥ 800,000,000
Interest rate																																6.09%
Obliged repay | ¥																																¥ 800,000,000
Xinda Holdings HK [Member] | Property, Plant and Equipment [Member]
Long-term Purchase Commitment [Line Items]
Total consideration																														$ 254,500,000
Xinda Holdings HK [Member] | Property, Plant and Equipment [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Total consideration | ¥																															¥ 1,800,000,000
Xinda Holdings HK [Member] | Working Capital [Member]
Long-term Purchase Commitment [Line Items]
Total consideration																														$ 84,800,000
Xinda Holdings HK [Member] | Working Capital [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Total consideration | ¥																															¥ 600,000,000
Sichuan Xinda [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers																																	17,100,000
Sichuan Xinda [Member] | Construction in progress [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers																																	10,400,000
Sichuan Xinda [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers | ¥																																								120,900,000
Sichuan Xinda [Member] | China, Yuan Renminbi [Member] | Construction in progress [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers | ¥																																								74,000,000
Sichuan Xinda [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Total consideration						$ 2,400,000																											243,500,000
Purchase Obligation						$ 200,000																											900,000
Prepayments to equipment suppliers																								$ 17,100,000									1,300,000																	$ 241,800,000
Bio-composite material | T																					300,000
Sichuan Xinda [Member] | Equipment [Member] | Construction in progress [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers																								10,400,000
Sichuan Xinda [Member] | Equipment [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Total consideration | ¥							¥ 17,000,000																											¥ 1,722,900,000
Purchase Obligation | ¥																																								6,000,000														¥ 1,600,000
Prepayments to equipment suppliers | ¥																																								9,400,000											¥ 1,710,100,000		¥ 120,900,000
Sichuan Xinda [Member] | Equipment [Member] | China, Yuan Renminbi [Member] | Construction in progress [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers | ¥																																																					¥ 74,000,000
Peaceful [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers	[1]																																16,860,609																$ 4,936,983
Peaceful [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Total consideration																										$ 12,700,000							7,900,000
Prepayments to equipment suppliers																																	4,800,000									$ 18,800,000
Peaceful [Member] | Equipment [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Total consideration | ¥																											¥ 89,800,000							55,900,000
Prepayments to equipment suppliers | ¥																																								33,900,000
Peaceful [Member] | Warehouse Construction Contract [Member] | United Arab Emirates, Dirhams
Long-term Purchase Commitment [Line Items]
Total consideration | د.إ								د.إ 18,800,000
Purchase Obligation | د.إ																																									د.إ 6,700,000
Beijin Construction [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers	[2]																																6,670,735		6,867,269
Beijin Construction [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Total consideration		$ 3,400,000																				$ 400,000		$ 33,600,000
Purchase Obligation																																	20,300,000
Beijin Construction [Member] | Equipment [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Total consideration | ¥			¥ 23,800,000																				¥ 2,900,000		¥ 237,600,000
Purchase Obligation | ¥																																								143,400,000
Hailezi [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to equipment suppliers	[3]																																412,405,158		502,087,116
Prepayments to be refunded from termination of contracts																																						$ 1,800,000
Hailezi [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Prepayments to be refunded from termination of contracts | ¥																																							¥ 12,400,000
Hailezi [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Total consideration																	$ 317,100,000
Prepayments to equipment suppliers																																						$ 87,900,000
Prepayments to be refunded from termination of contracts									$ 241,000,000					$ 241,000,000
Hailezi [Member] | Equipment [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Total consideration | ¥																		¥ 2,242,800,000
Prepayments to equipment suppliers | ¥																																																				¥ 621,600,000
Prepayments to be refunded from termination of contracts | ¥										¥ 1,704,900,000					¥ 1,704,900,000
Hailezi [Member] | Warehouse Construction Contract [Member]
Long-term Purchase Commitment [Line Items]
Purchase Obligation																																	4,300,000
Hailezi [Member] | Warehouse Construction Contract [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Purchase Obligation | ¥																																								30,200,000
Harbin Hailezi Science and Technology Co. Ltd. ("Hailezi") [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Total consideration																																	314,300,000
Purchase Obligation																																	300,000
Prepayments to equipment suppliers																																	2,500,000
Harbin Hailezi Science and Technology Co. Ltd. ("Hailezi") [Member] | Equipment [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Total consideration | ¥																																		2,222,900,000
Purchase Obligation | ¥																																								1,900,000
Prepayments to equipment suppliers																																	18,000,000
Nanchong Project [Member] | Property, Plant and Equipment [Member]
Long-term Purchase Commitment [Line Items]
Bio-composite material | T																					20,000
Nanchong Project [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Total consideration																																	268,700,000
Purchase Obligation																																	26,900,000
Prepayments to equipment suppliers																																	241,800,000
Nanchong Project [Member] | Equipment [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Total consideration | ¥																																		1,900,100,000
Purchase Obligation | ¥																																								190,000,000
Prepayments to equipment suppliers | ¥																																								1,710,100,000
HLJ Project [Member]
Long-term Purchase Commitment [Line Items]
Total capital expenditure																																	567,700,000
Investment in fixed assets																																	465,900,000
HLJ Project [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Total capital expenditure | ¥																																		4,015,000,000
Investment in fixed assets | ¥																																		¥ 3,295,000,000
HLJ Project [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Purchase Obligation																																	63,500,000
Prepayments to equipment suppliers																																	42,500,000														$ 34,000,000
HLJ Project [Member] | Equipment [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Purchase Obligation | ¥																																								449,100,000
Prepayments to equipment suppliers | ¥																																								300,700,000								¥ 240,800,000
HLJ Xinda Group [Member]
Long-term Purchase Commitment [Line Items]
Purchase Obligation																																	2,700,000
HLJ Xinda Group [Member] | Longjiang Bank, Harbin Branch [Member]
Long-term Purchase Commitment [Line Items]
Loan amount																																													$ 70,700,000
HLJ Xinda Group [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Purchase Obligation | ¥																																								18,800,000
HLJ Xinda Group [Member] | China, Yuan Renminbi [Member] | Longjiang Bank, Harbin Branch [Member]
Long-term Purchase Commitment [Line Items]
Loan amount | ¥																																														¥ 500,000,000
Interest rate																																					6.09%
Obliged repay | ¥																																					¥ 500,000,000
HLJ Xinda Group [Member] | Property, Plant and Equipment [Member]
Long-term Purchase Commitment [Line Items]
Bio-composite material | T																100,000
HLJ Xinda Group [Member] | Equipment [Member]
Long-term Purchase Commitment [Line Items]
Total consideration												$ 106,000,000																					129,600,000
Prepayments to equipment suppliers																																	$ 130,200,000														$ 163,600,000
Bio-composite material | T											300,000	300,000	300,000			300,000																	300,000	300,000
HLJ Xinda Group [Member] | Equipment [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Total consideration | ¥													¥ 749,800,000																					¥ 916,200,000
Prepayments to equipment suppliers | ¥																																								920,900,000								¥ 1,157,000,000
Falcon Red Eye Contracting Co LLC [Member] | Warehouse Construction Contract [Member]
Long-term Purchase Commitment [Line Items]
Total consideration																												$ 1,800,000
Purchase Obligation																																	$ 400,000
Falcon Red Eye Contracting Co LLC [Member] | Warehouse Construction Contract [Member] | United Arab Emirates, Dirhams
Long-term Purchase Commitment [Line Items]
Total consideration | د.إ																													د.إ 6,700,000
Purchase Obligation | د.إ																																									د.إ 1,600,000
Beijing Fangyuan Decoration Engineering Co [Member] | Workshops and buildings [Member]
Long-term Purchase Commitment [Line Items]
Total consideration				$ 200,000															$ 800,000
Purchase Obligation																																	500,000
Beijing Fangyuan Decoration Engineering Co [Member] | Workshops and buildings [Member] | Construction in progress [Member]
Long-term Purchase Commitment [Line Items]
Total consideration																																			300,000
Beijing Fangyuan Decoration Engineering Co [Member] | Workshops and buildings [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Total consideration | ¥					¥ 1,200,000															¥ 5,800,000
Purchase Obligation | ¥																																								3,800,000
Beijing Fangyuan Decoration Engineering Co [Member] | Workshops and buildings [Member] | China, Yuan Renminbi [Member] | Construction in progress [Member]
Long-term Purchase Commitment [Line Items]
Total consideration | ¥																																				¥ 2,000,000
Beijing Zhonghongwufang Stone Co [Member] | Workshops and buildings [Member]
Long-term Purchase Commitment [Line Items]
Purchase Obligation																																	100,000
Beijing Zhonghongwufang Stone Co [Member] | Workshops and buildings [Member] | Construction in progress [Member]
Long-term Purchase Commitment [Line Items]
Total consideration																																			$ 100,000
Beijing Zhonghongwufang Stone Co [Member] | Workshops and buildings [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Purchase Obligation | ¥																																								¥ 600,000
Beijing Zhonghongwufang Stone Co [Member] | Workshops and buildings [Member] | China, Yuan Renminbi [Member] | Construction in progress [Member]
Long-term Purchase Commitment [Line Items]
Total consideration | ¥																																				¥ 600,000
Shanghai Sales defaults on loans [Member]
Long-term Purchase Commitment [Line Items]
Material loss contingency																																	195,000,000
Shanghai Sales defaults on loans [Member] | Interest Expense [Member]
Long-term Purchase Commitment [Line Items]
Material loss contingency																																	$ 11,200,000
Shanghai Sales defaults on loans [Member] | China, Yuan Renminbi [Member]
Long-term Purchase Commitment [Line Items]
Material loss contingency | ¥																																		1,379,000
Shanghai Sales defaults on loans [Member] | China, Yuan Renminbi [Member] | Interest Expense [Member]
Long-term Purchase Commitment [Line Items]
Material loss contingency | ¥																																		¥ 79,200,000

[1] On October 20, 2016, Sichuan Xinda entered into an equipment purchase contract with Peaceful Treasure Limited ("Peaceful") for a total consideration of RMB89.8 million (equivalent to US$12.7 million) to purchase certain production and testing equipment. The Company prepaid RMB33.9 million (equivalent to US$4.8 million) as of September 30, 2019.

[2] Since November 15, 2016, Sichuan Xinda entered into decoration contracts with Sichuan Beijin Construction Engineering Company Limited ("Beijin Construction") to perform indoor and outdoor decoration work for a consideration of RMB264.3 million (equivalent to US$37.4 million). Pursuant to the contracts with Beijin Construction, Sichuan Xinda has prepaid RMB120.9 million (equivalent to US$17.1 million) as of September 30, 2019, of which RMB74.0 million (equivalent to US$10.4 million) was transferred to construction in progress.

[3] On September 26, 2016 and February 28, 2017, HLJ Xinda Group entered into equipment purchase contracts with Hailezi for a total consideration of RMB782.2 million (equivalent to US$110.6 million) to purchase storage facility and other equipment, which will be used for upgrading the storage system of warehouse located in Harbin, China. Pursuant to the contract with Hailezi, HLJ Xinda Group prepaid RMB621.6 million (equivalent to US$87.9 million) during the first quarter of 2017. Due to a redesign of outdoor storage facility in June 2017, HLJ Xinda Group entered into a supplementary agreement with Hailezi, which decreased the original contract amount to RMB283.7 million (equivalent to US$40.1 million). Hailezi refunded RMB369.1 million (equivalent to US$52.2 million) to HLJ Xinda Group on June 22, 2017. In May 2019, HLJ Xinda Group has prepaid another RMB1.0 million (equivalent to US$0.1 million). As of September 30, 2019, HLJ Xinda Group has prepaid RMB253.5 million (equivalent to US$35.8 million).

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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Revenues	$ 373,159,091	$ 297,224,740	$ 1,137,698,978	$ 925,007,293
Cost of revenues	(313,044,518)	(249,997,804)	(961,994,051)	(767,759,035)
Gross profit	60,114,573	47,226,936	175,704,927	157,248,258
Selling expenses	(431,070)	(2,741,156)	(956,300)	(7,354,876)
General and administrative expenses	(5,999,123)	(8,117,769)	(20,539,101)	(28,341,545)
Research and development expenses	(19,908,789)	(23,342,321)	(39,522,696)	(33,680,855)
Total operating expenses	(26,338,982)	(34,201,246)	(61,018,097)	(69,377,276)
Operating income	33,775,591	13,025,690	114,686,830	87,870,982
Interest income	338,033	264,838	1,228,169	3,607,136
Interest expense	(17,036,345)	(13,393,886)	(46,595,864)	(37,562,666)
Foreign currency exchange gains	4,065,890	4,387,166	4,975,637	6,064,328
Losses on foreign currency option contracts				(520,981)
Gains on disposal of a subsidiary			518,491
Government grant	1,405,284	1,145,703	5,111,437	4,001,746
Total non-operating expense, net	(11,227,138)	(7,596,179)	(34,762,130)	(24,410,437)
Income before income taxes	22,548,453	5,429,511	79,924,700	63,460,545
Income tax benefit (expense)	(5,583,240)	3,535,430	(11,867,455)	(8,171,625)
Net income	$ 16,965,213	$ 8,964,941	$ 68,057,245	$ 55,288,920
Earnings per common share:
Basic and diluted	$ 0.25	$ 0.13	$ 1.02	$ 0.83
Net income	$ 16,965,213	$ 8,964,941	$ 68,057,245	$ 55,288,920
Other comprehensive losses
Foreign currency translation adjustment, net of nil income taxes	(22,690,259)	(28,497,101)	(24,732,543)	(38,141,701)
Total Comprehensive income (losses)	$ (5,725,046)	$ (19,532,160)	$ 43,324,702	$ 17,147,219

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Accounts receivable

9 Months Ended

Sep. 30, 2019

Accounts Receivable, after Allowance for Credit Loss [Abstract]

Accounts receivable

Note 2 – Accounts receivable

Accounts receivable consists of the following:

	September 30, 2019			December 31, 2018
		US$			US$
Accounts receivable		326,868,747			294,726,804
Allowance for doubtful accounts		(37,374	)		(38,516	)
Accounts receivable, net		326,831,373			294,688,288

As of September 30, 2019 and December 31, 2018, the accounts receivable balances also include notes receivable in the amount of US$335,142 and US$27,392, respectively. As of September 30, 2019 and December 31, 2018, US$37,431,712 and US$94,581,170, respectively, of accounts receivable are pledged for the short-term bank loans. 

There was no accrual of additional provision or write-off of accounts receivable for the three-month and nine-month periods ended September 30, 2019 and 2018.

The following table provides an analysis of the aging of accounts receivable as of September 30, 2019 and December 31, 2018:

	September 30, 2019		December 31, 2018
		US$		US$
Aging:
– current		270,927,987		218,458,862
– 1-3 months past due		34,349,372		31,386,341
– 4-6 months past due		5,753,489		109,412
– 7-12 months past due		15,124,228		42,532,170
– greater than one year past due		713,671		2,240,019
Total accounts receivable		326,868,747		294,726,804

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Leases (Schedule of Lease Costs) (Details)	9 Months Ended
	Sep. 30, 2019 USD ($)
Leases [Abstract]
Operating lease cost	$ 1,271,455
Short-term lease cost	432,124
Total lease costs	$ 1,703,579

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Deferred Income

9 Months Ended

Sep. 30, 2019

Deferred Revenue Disclosure [Abstract]

Deferred Income

Note 12 – Deferred Income

On January 26, 2015, the Company entered into a memorandum and a fund support agreement (the "Agreement") with the People's Government of Shunqing District, Nanchong City, Sichuan Province ("Shunqing Government") pursuant to which Shunqing Government, through its investment vehicle, extended to the Company RMB350 million (equivalent to US$49.5 million) to support the construction of the Sichuan plant, which has been received in full in the form of government repayment of bank loans on behalf of the Company.

In addition, the Company has received RMB333.2 million (equivalent to US$47.1 million) from Shunqing Government and RMB6.4 million (equivalent to US$0.9 million) from Ministry of Finance of the People's Republic of China to support the construction and RMB2.2 million (equivalent to US$0.3 million) special funds of ministerial key research projects from Ministry of Science and Technology of PRC as of September 30, 2019.

The Company has also received RMB45.0 million (equivalent to US$6.4 million) from Harbin Bureau of Finance for Biomedical composites project as of September 30, 2019.

Since the funding is related to the construction of long-term assets, the amounts were recognized as government grant, which is included in deferred income on the consolidated balance sheets, and to be recognized as other income in the consolidated statements of comprehensive income over the periods and in the proportions in which depreciation expense on the long-term assets is recognized.

The Sichuan factory has been operational since July 2016. A cumulative RMB97.1 million (equivalent to US$13.8 million) government grants have been amortized as other income proportionate to the depreciation of the related assets, of which RMB25.5 million (equivalent to US$3.6 million) was amortized in the nine-month period ended September 30, 2019.

The Company also received RMB36.0 million (equivalent to US$5.1 million) from Shunqing Government with respect to interest subsidy for bank loans. A cumulative RMB16.4 million (equivalent to US$2.3 million) government grants have been amortized as other income in line with the amount of related loan interest accrued.

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Borrowings

9 Months Ended

Sep. 30, 2019

Debt Disclosure [Abstract]

Borrowings

Note 8 – Borrowings

The Company has credit facilities with several banks under which they draw short-term and long-term bank loans as described below.

(a)  Current

	September 30,		December 31,
	2019		2018
		US$		US$
Unsecured loans		310,183,942		418,198,508
Loans secured by accounts receivable		63,623,125		65,567,082
Loans secured by restricted cash		59,138,472		69,500,000
Current portion of long-term bank loans (note b)		186,577,210		176,401,330
Total short-term loans, including current portion of long-term bank loans		619,522,749		729,666,920

As of September 30, 2019 and December 31, 2018, the Company's short-term bank loans (including the current portion of long-term bank loans) bear a weighted average interest rate of 4.8% and 4.7% per annum, respectively. All short-term bank loans mature at various times within one year and contain no renewal terms. 

During the nine-month period ended September 30, 2019, the Company repaid thirteen loans in a total amount of RMB450.0 million (equivalent to US$63.6 million), and obtained thirteen loans in a total amount of RMB450.0 million (equivalent to US$63.6 million) at an annual interest rate of 4.350% secured by accounts receivables of RMB264.8 million (equivalent to US$37.4 million). 

In July 2017, the Company obtained a one-year secured loan of US$14.0 million from Bank of China (Paris Branch) at an annual interest rate of 2.5%. The loan was secured by restricted cash of RMB107.0 million (equivalent to US$15.6 million) in Bank of China in Harbin, China. In accordance with the renewal agreement on July 19, 2018, the repayment term of the loan was extended and the loan was repaid in April 2019. 

In October 2017, the Company obtained a one-year secured loan of US$5.0 million from Bank of China (Paris Branch) at an annual interest rate of 2.5%. The loan was secured by restricted cash of RMB37.5 million (equivalent to US$5.5 million) in Bank of China in Harbin, China. In accordance with the renewal agreement on July 19, 2018, the repayment term of the loan was extended and the loan was repaid in April 2019. 

In October 2017, the Company obtained a one-year secured loan of US$5.5 million from Bank of China (Paris Branch) at an annual interest rate of 2.5%. The loan was secured by restricted cash of RMB42.0 million (equivalent to US$6.1 million) in Bank of China in Harbin, China. In accordance with the renewal agreement on July 19, 2018, the repayment term of the loan was extended and the loan was repaid in April 2019. 

In May 2018, the Company obtained a three-month secured short-term loan of US$45.0 million from Standard Chartered Bank with the interest rate at 1.5% per annum over LIBOR payable on the last day of its interest period. The loan was secured by restricted cash of RMB300.0 million (equivalent to US$42.6 million) in Standard Chartered Bank in Harbin, China. The Company did not repay the loan on time which is due on August 17, 2018 due to the stricter foreign exchange control in the PRC. In accordance with the renewal agreements dated October 30, 2019, the repayment term of the loan was extended and the loan will be due on November 29, 2019. The loan will be repaid when the Company receive the US$135.0 million loan from the consortium of banks and financial institutions led by Industrial and Commercial Bank of China (Macau) Limited pursuant to the facility agreement dated October 2, 2019, details please refer to Note 22. 

In January 2019, the Company obtained a nine-month secured short-term loan of RMB100.0 million (equivalent to US$14.1 million) from Postal Savings Bank of China at an annual interest rate of 4.35%. The loan was secured by restricted cash of RMB10.0 million (equivalent to US$1.4 million) in Postal Savings Bank of China.

(b) Non-current

	September 30, 2019			December 31, 2018
		US$			US$
Secured loans		72,652,556			2,177,985
Unsecured loans		300,443,100			196,031,589
Syndicate loan facility		90,000,000			90,000,000
Less: current portion		(186,577,210	)		(176,401,330	)
Total long-term bank loans, excluding current portion		276,518,446			111,808,244

In October and November 2015, the Company obtained three long term unsecured loans of RMB260.0 million (equivalent to US$36.8 million) from Bank of China at an annual interest rate of 4.75%. In January 2016, the Company obtained a long term unsecured loan of RMB80.0 million (equivalent to US$11.3 million) from Bank of China at an annual interest rate of 4.75%. On December 9, 2016, the Company obtained a long term unsecured loan of RMB30.0 million (equivalent to US$4.2 million) from Bank of China at an annual interest rate of 4.75%. On March 23, 2017, the Company obtained a long term unsecured loan of RMB25.0 million (equivalent to US$3.5 million) from Bank of China at an annual interest rate of 4.75%. The Company repaid RMB175.0 million (equivalent to US$24.7 million) during 2017 and 2018, and RMB25.0 million (equivalent to US$3.5 million) on April 28, 2019. RMB100.0 million (equivalent to US$14.1 million), RMB20.0 million (equivalent to US$2.8 million), and RMB75.0 million (equivalent to US$10.6 million) will be repaid on October 28, 2019, April 28, 2020 and October 28, 2020, respectively. As of September 30, 2019, the Company was providing external guarantees without the bank’s consent, which was in violation of a provision of the loan contract. According to the loan contract, Bank of China has the right to declare the above loans be immediately due and payable. As a result, the loan amounting to RMB75.0 million (equivalent to US$10.6 million) due on October 28, 2020 was callable and classified as short-term loans. For details of the guarantee, please refer to note 18.

On August 22, 2016, Xinda Holding (HK) Company Limited ("Xinda Holding (HK)") a wholly owned subsidiary of the Company, entered into a facility agreement for a loan facility in an aggregate amount of US$180.0 million with a consortium of banks and financial institutions led by Standard Chartered Bank (Hong Kong) Limited. The Company repaid US$90.0 million in 2017 and 2018. US$90.0 million of the principal amount should be repaid on August 22, 2018. The loans were not repaid on time due to the stricter foreign exchange control in the PRC. As of September 30, 2019, the Company totally pledged RMB349.0 million (equivalent to US$49.3 million) restricted cash to secure the repayment of the above loan. In accordance with the renewal agreements dated October 30, 2019, the repayment term of the loan was extended and the loan will be due on November 29, 2019. The loan will be repaid when the Company receive the US$135.0 million loan from the consortium of banks and financial institutions led by Industrial and Commercial Bank of China (Macau) Limited pursuant to the facility agreement dated October 2, 2019, details please refer to Note 22.

During 2017, the Company obtained four long-term unsecured loans of RMB430.0 million (equivalent to US$60.8 million) from Nanchong Shuntou Development Group Co., Ltd. at an annual interest rate of 4.35%. In accordance with the renewal agreements on April 2, 2019, the repayment terms of the four loans were extended and the loans would be due on September 30, 2019. As of September 30, 2019, the loans were due and repayment terms have not been extended. The Company is currently negotiating with Nanchong Shuntou Development Group Co., Ltd for the extension.

On December 1, 2017, the Company obtained a seven-year unsecured loan of RMB526.3 million (equivalent to US$74.4 million) from Longjiang Bank, Harbin Branch at an annual interest rate of 4.9%. The Company borrowed another long-term loan in amount of RMB169.1 million (equivalent to US$23.9 million) in January 2018 at an annual interest rate of 4.9%. The Company repaid RMB15.0 million (equivalent to US$2.1 million) on June 30, 2019. RMB20.0 million (equivalent to US$2.8 million), RMB35.0 million (equivalent to US$5.0 million), RMB35.0 million (equivalent to US$5.0 million), RMB70.0 million (equivalent to US$9.9 million), RMB70.0 million (equivalent to US$9.9 million), RMB90.0 million (equivalent to US$12.7 million), RMB90.0 million (equivalent to US$12.7 million) and RMB270.4 million (equivalent to US$38.2 million) will be repaid on December 30, 2019, June 30, 2020, December 30, 2020, June 30, 2021, December 30, 2021, June 30, 2022, December 30, 2022 and after 2022, respectively.

On June 17, 2019, the Company obtained a long-term loan of RMB600.0 million (equivalent to US$84.8 million) from Longjiang Bank, Harbin Branch at an annual interest rate of 5.635%. RMB100.0 million (equivalent to US$14.2 million), RMB100.0 million (equivalent to US$14.2 million), RMB200.0 million (equivalent to US$28.2 million), RMB200.0 million (equivalent to US$28.2 million), will be repaid in 2021, 2022, 2023, and 2024, respectively. In September 2019, the Company obtained another long-term loan of RMB219.6 million (equivalent to US$31.1 million) from Longjiang Bank, Harbin Branch at an annual interest rate of 5.635%, and the loan will be repaid in 2025.

On December 26, 2018, the Company obtained a five-year secured loan of AED8.0 million (equivalent to US$2.2 million) from National Bank of Umm Al Qaiwain at an interest rate of three-month EBOR (2.35% as of September 30, 2019) plus 3.75%. The long-term loan was secured by an undated cheque of AED8.8 million (equivalent to US$2.4 million) favouring the bank provided by Dubai Xinda. The cheque would not be cashed by the bank unless Dubai Xinda defaults. Principal will be repaid in ten half-yearly installments of AED0.8 million (equivalent to US$0.2 million) each. The Company repaid AED0.8 million (equivalent to US$0.2 million) on June 30, 2019.

In January 2019, the Company obtained a two-year secured loan of RMB500.0 million (equivalent to US$70.7 million) from China Construction Bank. The long-term loan was secured by the right of equity income of Sichuan Xinda, which was previously held by the Company. The registration of pledge was completed in January 2019.

Maturities on long-term bank loans (including current portion) are as follows:

	September 30, 2019
		US$
2019		181,410,945
2020		10,332,528
2021		105,060,291
2022		40,023,319
After 2022		126,268,573
Total		463,095,656

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Prepaid expenses and other current assets

9 Months Ended

Sep. 30, 2019

Prepaid Expense and Other Assets, Current [Abstract]

Prepaid expenses and other current assets

Note 4 – Prepaid expenses and other current assets

Prepaid expenses and other current assets consist of the following:

	September 30, 2019		December 31, 2018
	US$		US$
Value added taxes receivables (i)		1,911,502		4,700,702
Advances to suppliers (ii)		131,089,782		104,469,023
Interest receivable (iii)		939,962		826,729
Consideration for sales of Shanghai Sales (iv)		-		7,285,231
Receivables from Hong Kong Grand Royal Trading Co., Ltd.(v)		42,566,949		-
Receivables from Harbin Xinda High-Tech Co., Ltd. (vi)		50,096,218		-
Others (vii)		7,903,006		14,936,843
Total prepaid expenses and other current assets		234,507,419		132,218,528

(i) Value added taxes receivables mainly represent the input taxes on purchasing equipment by Heilongjiang Xinda Enterprise Group Company Limited (“HLJ Xinda Group”) and Sichuan Xinda Enterprise Group Company Limited (“Sichuan Xinda”), which are to be net off with output taxes. Value added taxes receivables were recognized in operating activities in consolidated statements of cash flows.

(ii) Advances to suppliers are the advances to purchase raw materials.

(iii) Interest receivable mainly represents interest income accrued from restricted cash.

(iv) On December 18, 2018, HLJ Xinda Group entered into an agreement with Mr. Xiaohui Gao, General Manager of Heilongjiang Xinda Enterprise Group Shanghai New Materials Sales Company Limited (“Shanghai Sales”), to transfer Shanghai Sales from HLJ Xinda Group to Mr. Gao for a total consideration of RMB50.0 million (equivalent to US$7.3 million). Pursuant to the contract, the Company completed the legal transfer on December 19, 2018 and the full consideration of US$7.3 million was received on April 11, 2019. The cash received was included in the cash flows from investing activities for the nine-month period ended September 30, 2019.

(v) Hong Kong Grand Royal Trading Co., Ltd. (“Hong Kong Grand Royal”) is a raw material supplier of Dubai Xinda. Dubai Xinda has prepaid US$48.2 million to Hong Kong Grand Royal in 2017 for purchase of raw materials. Due to the price fluctuation of raw materials, Hong Kong Grand Royal could not purchase and deliver the raw materials to Dubai Xinda. In July 2019, both parties entered into a supplemental agreement to cancel the original purchase agreements and Hong Kong Grand Royal shall refund US$14.0 million by September 30, 2019 and US$34.2 million by October 30, 2019. As of September 30, 2019, Hong Kong Grand Royal has refunded US$5.6 million. On October 25, 2019, both parties entered into another supplemental agreement, pursuant to which, the remaining refund shall be paid by December 30, 2019.

(vi) During the nine-month period ended September 30, 2019, the Company transferred US$50.1 million to Harbin Xinda High-Tech Co., Ltd. The amount was subsequently settled in November 2019.

(vii) Others mainly include prepaid miscellaneous service fee and staff advance.

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Prepaid expenses and other current assets (Tables)

9 Months Ended

Sep. 30, 2019

Prepaid Expense and Other Assets, Current [Abstract]

Schedule of Prepaid Expense and Other Assets Current

Prepaid expenses and other current assets consist of the following:

	September 30, 2019		December 31, 2018
	US$		US$
Value added taxes receivables (i)		1,911,502		4,700,702
Advances to suppliers (ii)		131,089,782		104,469,023
Interest receivable (iii)		939,962		826,729
Consideration for sales of Shanghai Sales (iv)		-		7,285,231
Receivables from Hong Kong Grand Royal Trading Co., Ltd.(v)		42,566,949		-
Receivables from Harbin Xinda High-Tech Co., Ltd. (vi)		50,096,218		-
Others (vii)		7,903,006		14,936,843
Total prepaid expenses and other current assets		234,507,419		132,218,528

(i) Value added taxes receivables mainly represent the input taxes on purchasing equipment by Heilongjiang Xinda Enterprise Group Company Limited ("HLJ Xinda Group") and Sichuan Xinda, Enterprise Group Company Limited ("Sichuan Xinda"), which are to be net off with output taxes. Value added taxes receivables were recognized in operating activities in consolidated statements of cash flows.

(ii) Advances to suppliers are the advances to purchase raw materials.

(iii) Interest receivable mainly represents interest income accrued from restricted cash.

(iv) On December 18, 2018, HLJ Xinda Group entered into an agreement with Mr. Xiaohui Gao, General Manager of Heilongjiang Xinda Enterprise Group Shanghai New Materials Sales Company Limited (“Shanghai Sales”), to transfer Shanghai Sales from HLJ Xinda Group to Mr. Gao for a total consideration of RMB50.0 million (equivalent to US$7.3 million). Pursuant to the contract, the Company completed the legal transfer on December 19, 2018 and the full consideration of US$7.3 million was received on April 11, 2019. The cash received was included in the cash flows from investing activities for the nine-month period ended September 30, 2019.

(v) Hong Kong Grand Royal Trading Co., Ltd. (“Hong Kong Grand Royal”) is a raw material supplier of Dubai Xinda. Dubai Xinda has prepaid US$48.2 million to Hong Kong Grand Royal in 2017 for purchase of raw materials. Due to the price fluctuation of raw materials, Hong Kong Grand Royal could not purchase and deliver the raw materials to Dubai Xinda. In July 2019, both parties entered into a supplemental agreement to cancel the original purchase agreements and Hong Kong Grand Royal shall refund US$14.0 million by September 30, 2019 and US$34.2 million by October 30, 2019. As of September 30, 2019, Hong Kong Grand Royal has refunded US$5.6 million. On October 25, 2019, both parties entered into another supplemental agreement, pursuant to which, the remaining refund shall be paid by December 30, 2019.

(vi) During the nine-month period ended September 30, 2019, the Company transferred US$50.1 million to Harbin Xinda High-Tech Co., Ltd. The amount was subsequently settled in November 2019.

(vii) Others mainly include prepaid miscellaneous service fee and staff advance.

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Accrued expenses and other current liabilities (Tables)

9 Months Ended

Sep. 30, 2019

Accrued Liabilities, Current [Abstract]

Schedule of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consist of the following:

	September 30, 2019		December 31, 2018
		US$		US$
Payables for purchase of property, plant and equipment		14,038,643		53,059,897
Accrued freight expenses		14,341,777		25,908,990
Accrued interest expenses		10,012,097		8,873,532
Contract liabilities (i)		16,248,016		16,105,245
Non income tax payables		4,617,298		6,425,236
Payables to Macromolecule Composite Materials (ii)		19,422,453		—
Others (iii)		19,822,979		16,553,998
Total accrued expenses and other current liabilities		98,503,263		126,926,898

(i) Contract liabilities mainly represent the advance received from customers in the PRC for the finished goods and raw materials purchases as of September 30, 2019. The change in contract liabilities primarily represents the cash received, less amounts recognized as revenues during the period.

(ii) As of September 30, 2019, the Company owed Heilongjiang Xinda Macromolecule Composite Materials Company Limited (“Macromolecule Composite Materials”) US$19.4 million, which was subsequently settled in October 2019.

(iii) Others mainly represent accrued payroll and employee benefits, accrued audit and consulting fees, electricity fee and other accrued miscellaneous operating expenses.