XML 53 R46.htm IDEA: XBRL DOCUMENT v3.19.2
Prepayments and Other Current Assets (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Summary of prepayments and other current assets    
Prepaid land lease $ 165,825 $ 437,114
Prepayment for purchase of materials 52,327
Value-added tax recoverable 5,750,644 5,760,280
Others 276,517 43,905
Total prepayments and other current assets $ 6,245,313 $ 6,241,299