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Prepayments and Other Current Assets
12 Months Ended
Dec. 31, 2019
Prepayments and Other Current Assets [Abstract]  
Prepayments and Other Current Assets [Text Block]

(5) Prepayments and other current assets


Prepayments and other current assets consisted of the following as of December 31, 2019 and 2018: 


   December 31,   December 31, 
   2019   2018 
Prepaid land lease  $301,023   $437,114 
Prepayment for purchase of materials   5,394,297    - 
Value-added tax recoverable   5,666,975    5,760,280 
Others   250,946    43,905 
   $11,613,241   $6,241,299