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Property, Plant and Equipment (Details) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Abstract]    
Permit of land use $ 403,755 $ 409,612
Building 9,375,817 9,511,832
Plant, machinery and equipment 26,309,262 26,576,409
Motor vehicle 308,334 312,807
Office equipment 217,058 198,292
Total 36,614,226 37,008,952
Less: accumulated depreciation (20,300,399) (17,714,573)
Property, plant and equipment, net $ 16,313,827 $ 19,294,379