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Consolidated Statements of Cash Flows - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Cash flows from operating activities      
Net loss $ (10,692,982) $ (10,022,228) $ (9,958,695)
Net loss from discontinued operations 0 0 299,412
Net loss from continuing operations (10,692,982) (10,022,228) (9,659,283)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
(Reversal of) allowance for doubtful accounts - accounts receivable (52,789) (845,416) 1,297,752
(Reversal of) allowance for doubtful accounts - advance to suppliers (142,799) (378,233) 164,220
Write off manufacturing rebate receivable 5,819,059 0 0
(Reversal of) Allowance for doubtful accounts - other receivables 0 (84,573) 705,400
Share based compensation 1,840,000 0 0
Inventory reserve 359,501 92,064 1,030,236
Impairment of goodwill and intangible asset 0 11,998,606 9,584,000
Decrease in deferred tax liability 0 (1,799,791) (165,500)
Depreciation expense 444,462 436,427 462,639
Amortization of intangible asset 472,140 441,489 441,489
Amortization of right of use assets 44,964 0 0
Amortization of prepaid consulting expense 0 0 140,738
Loss (gain) from disposal of property, plant and equipment (545,844) 68,614 (8,047)
Issuance of common stock for service 0 33,812 0
Contingent liability 535,389 0 0
Changes in operating assets and liabilities:      
Accounts receivable - non-related party (9,573,463) 8,024,036 (9,879,682)
Accounts receivable - related party 0 0 0
Advances to suppliers 3,694,066 7,093,022 415,727
Advances to suppliers - related party 1,550,000 (1,448,000) 0
Inventory (737,552) (125,492) 242,142
Prepaid expenses and other receivables (768,288) 133,768 9,127
Manufacturing rebate receivable   2,374,720 1,563,840
Accounts payable (16,266) (206,261) (751,363)
Accrued liabilities and other payables (323,441) 313,552 (78,923)
Customer deposits 318,875 (3,792,409) 6,184,836
Collection of receivables from discontinued operations 0 0 8,962,187
Lease liabilities (19,824) 0 0
Taxes payable (295,666) 1,863,853 (597,392)
Net cash provided by continuing operations (8,090,458) 14,171,560 10,064,143
Net cash provided by discontinued operations 0 0 4,632,769
Net cash provided by operating activities (8,090,458) 14,171,560 14,696,912
Cash flows from investing activities      
Acquisition of property, plant and equipment (220,308) (144,806) (92,369)
Proceeds from disposal of property, plant and equipment 748,612 21,842 16,580
Additions to intangible assets (4,220) 0 0
Payment for investment 0 0 (6,707,570)
Proceeds from disposition of subsidiaries 0 0 854,567
Net cash used in continuing operations 524,084 (122,964) (5,928,792)
Net cash used in discontinued operations 0 0 (1,522)
Net cash used in investing activities 524,084 (122,964) (5,930,314)
Cash flows from financing activities      
Proceeds from (repayment of) loans from third parties 6,917,589 0 (2,823,890)
Repayment of loans from third parties (310,000) 0 0
Bank acceptance notes payable, net of repayment (1,772,550) 1,448,667 (1,823,003)
Proceeds from bank loans 7,774,800 9,568,384 6,918,544
Repayment of bank loans (8,738,900) (11,230,688) (7,352,944)
Proceeds from (repayment of) loans from related parties, net (10,428,196) 98,474 (378,833)
Proceeds from issuance of common stock and warrants 19,362,706 9,055,232 0
Net cash provided by (used in) continuing operations 12,805,449 8,940,069 (5,460,126)
Net cash provided by discontinued operations 0 0 0
Net cash provided by (used in) financing activities 12,805,449 8,940,069 (5,460,126)
Effect of exchange rate changes on cash, restricted cash and cash equivalents 988,502 1,704,662 (530,288)
Net increase in cash, restricted cash and cash equivalents 6,227,577 24,693,327 2,776,184
Cash, restricted cash and cash equivalents, beginning of year 37,339,304 12,645,977 9,869,793
Cash, restricted cash and cash equivalents, end of year 43,566,881 37,339,304 12,645,977
Supplemental disclosure information:      
Income taxes paid 2,278,134 436,566 1,105,876
Interest paid $ 265,248 $ 308,690 $ 439,869