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Loans (Details 1) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Collateral Amount $ 57,521,579 $ 55,667,476
Prepaid land use rights [Member]    
Collateral Amount 7,446,117 8,044,935
Buildings [Member]    
Collateral Amount 17,501,902 18,391,993
Machinery and equipment [Member]    
Collateral Amount 10,206,100 2,374,748
Bills receivable [Member]    
Collateral Amount 6,353,342 19,047,471
Pledged deposits [Member]    
Collateral Amount $ 16,014,118 $ 7,808,329