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Trade Accounts and Bills Payable (Details) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Trade Accounts and Bills Payable [Abstract]    
Trade accounts payable $ 9,509,354 $ 11,157,014
Bills payable    
Bank acceptance bills (Note 12) 4,583,372 3,915,094
Commercial acceptance bills 670,679
Trade accounts and bills payable $ 14,763,405 $ 15,072,108