Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities
Net loss	$ (2,807,333)	$ (2,567,833)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	681,408	538,204
(Recovery of) Provision for doubtful debts	71,162	(86,653)
Write-down of inventories	62,772	1,199
Share-based compensation	18,219	83,573
Loss on disposal of property, plant and equipment	273,117
Changes in operating assets and liabilities:
Trade accounts and bills receivable	5,372,834	15,205,781
Inventories	577,665	(1,394,118)
Prepayments and other receivables	1,275,562	246,784
Trade accounts and bills payable	(8,269,290)	(7,814,190)
Accrued expenses and other payables	(155,161)	(60,011)
Trade receivable from and payables to former subsidiaries	(1,124,827)	(1,750,618)
Net cash provided by (used in) operating activities	(4,023,872)	2,402,118
Cash flows from investing activities
Purchases of property, plant and equipment and construction in progress	(1,222,149)	(4,463,598)
Net cash used in investing activities	(1,222,149)	(4,463,598)
Cash flows from financing activities
Capital injection from non-controlling interests	56,704
Borrowings from related parties	266,671	2,641,957
Borrowings from an unrelated party	5,866,754
Repayment of borrowings from related parties	(407,168)
Repayment of earnest money to shareholders (note 1)	(773,310)
Net cash provided by financing activities	5,009,651	2,641,957
Effect of exchange rate changes on cash and cash equivalents, and restricted cash	438,891	401,958
Net increase in cash and cash equivalents, and restricted cash	202,521	982,435
Cash and cash equivalents, and restricted cash at the beginning of period	17,689,493	10,748,713
Cash and cash equivalents, and restricted cash at the end of period	17,892,014	11,731,148
Non-cash transactions:
Transfer of construction in progress to property, plant and equipment	5,218,383	126,886
Cash paid during the period for:
Interest, net of amounts capitalized	347,144	176,443
Issuance of common stock to investors - offset short-term borrowings from unrelated parties	$ 5,200,000