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Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Income Statement [Abstract]    
Revenue $ 10,866,449 $ 10,923,936
Cost of revenue 8,913,543 9,441,752
Gross profit 1,952,906 1,482,184
Operating expenses:    
Selling 2,215,394 2,352,610
General and administrative 1,822,655 2,289,520
Research and development 377,964 229,637
Bad debt 115,186 3,153
Impairment loss 17,015,117
Total operating expenses 4,531,199 21,890,037
Loss from operations (2,578,293) (20,407,853)
Other income (expense):    
Interest income 5,675 27,527
Interest expense (294,159) (321,718)
Net other expense (288,484) (294,191)
Loss before income taxes (2,866,777) (20,702,044)
Income tax benefit
Net loss (2,866,777) (20,702,044)
Other comprehensive income - foreign currency translation adjustment 769,227 259,130
Comprehensive income (loss) $ (2,097,550) $ (20,442,914)
Loss per share:    
Basic and diluted $ (0.07) $ (0.48)
Weighted average shares outstanding 43,623,273 43,579,557