XML 38 R31.htm IDEA: XBRL DOCUMENT v3.19.2
Prepayments and Other Current Assets (Tables)
6 Months Ended
Jun. 30, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of prepayments and other current assets

   June 30,   December 31, 
   2019   2018 
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 
   $6,245,313   $6,241,299