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Prepayments and Other Current Assets (Details) - USD ($)
Sep. 30, 2018
Dec. 31, 2017
Summary of prepayments and other current assets    
Prepaid land lease $ 47,971 $ 459,123
Prepayment for purchase of materials 3,962,957 183,649
Others 26,443 8,751
Total prepayments and other current assets $ 4,037,371 $ 651,523