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Trade Accounts and Bills Receivable, Net (Details) - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Trade Accounts and Bills Receivable, net [Abstract]    
Trade accounts receivable $ 23,664,220 $ 12,517,626
Less: Allowance for doubtful accounts (4,834,640) (4,650,686)
Trade accounts receivable, net 18,829,580 7,866,940
Bills receivable 252 85,480
Trade accounts and bills receivable, net $ 18,829,832 $ 7,952,420