Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net loss	$ (2,354,111)	$ (2,807,333)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	587,615	681,408
Provision for doubtful debts	673,186	71,162
Write-down of inventories	409,062	62,772
Share-based compensation	300,135	18,219
Loss on disposal of property, plant and equipment		273,117
Changes in operating assets and liabilities:
Trade accounts and bills receivable	(3,633,248)	5,372,834
Inventories	701,957	577,665
Prepayments and other receivables	51,905	1,275,562
Trade accounts and bills payable	(237,779)	(8,269,290)
Accrued expenses and other payables	(86,889)	(155,161)
Trade receivable from and payables to former subsidiaries	4,273,976	(1,124,827)
Net cash (used in) provided by operating activities	685,809	(4,023,872)
Cash flows from investing activities
Purchases of property, plant and equipment and construction in progress	(261,031)	(1,222,149)
Net cash used in investing activities	(261,031)	(1,222,149)
Cash flows from financing activities
Capital injection from non-controlling interests		56,704
Borrowings from related parties		266,671
Borrowings from shareholders	269,349
Borrowings from an unrelated party	3,467,148	5,866,754
Repayment of borrowing from an unrelated party	(5,673,515)
Repayment of borrowings from related parties		(407,168)
Repayment of earnest money to shareholders (note 1)		(773,310)
Net cash provided by (used in) financing activities	(1,937,018)	5,009,651
Effect of exchange rate changes on cash and cash equivalents, and restricted cash	(112,027)	438,891
Net increase (decrease) in cash and cash equivalents, and restricted cash	(1,624,267)	202,521
Cash and cash equivalents, and restricted cash at the beginning of period	7,133,948	17,689,493
Cash and cash equivalents, and restricted cash at the end of period	5,509,681	17,892,014
Supplemental non-cash investing and financing activities:
Transfer of construction in progress to property, plant and equipment		5,218,383
Issuance of common stock (note 1):
- offset repayment of promissory notes	200,000
- offset short-term borrowings from unrelated parties		5,200,000
Interest, net of amounts capitalized	$ 269,019	$ 347,144