CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (8,420,044)	$ (25,800,045)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Interest on capital lease obligation	135,936	144,881
Depreciation and amortization	15,987,860	14,060,927
Unrealized translation difference	1,832,026	(421,657)
Deferred tax asset	(1,108,471)	2,746,770
Stock-based compensation expense - options	2,392,163	45,900
Shares issued from treasury stock for services	0	21,600
Changes in assets and liabilities:
Accounts receivable	(1,161,704)	(5,070,180)
Other receivables	0	11,794
Inventories	292,101	(700,476)
Prepayments and deposits	(6,925)	14,166
Accounts and other payable and accrued expenses	342,790	(102,963)
Taxes payable	(449,915)	(374,575)
Prepaid land leases	(372,259)	0
Operating lease	(157,931)	114,746
Net cash (used in) provided by operating activities	9,305,627	(15,309,112)
CASH FLOWS USED IN INVESTING ACTIVITIES
Purchase of property, plant and equipment	(21,719,369)	(60,611,949)
Net cash used in investing activities	(21,719,369)	(60,611,949)
CASH FLOWS USED IN FINANCING ACTIVITIES
Repayment of capital lease obligation	(264,976)	(275,509)
Net cash used in financing activities	(264,976)	(275,509)
EFFECTS OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	6,599,270	(2,500,379)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(6,079,448)	(78,696,949)
CASH AND CASH EQUIVALENTS - BEGINNING OF YEAR	100,301,986	178,998,935
CASH AND CASH EQUIVALENTS - END OF YEAR	94,222,538	100,301,986
Cash paid during the period for:
Income taxes	0	0
Interest on finance lease obligation	136,774	149,286
Operating right-of-use assets obtained in exchange for lease obligations	0	8,241,818
SUPPLEMENTAL DISCLOSURE OF CASH NON-CASH INVESTING AND FINANCING ACTIVITIES
Purchase of property, plant and equipment included in retention payable	3,537,644	3,515,132
Par value of common stock issued upon cashless exercise of options	$ 0	$ 379