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Payables to Former Subsidiaries (Tables)
 3 Months Ended
Mar. 31, 2017
Schedule of Advance From A Former Subsidiary [Table Text Block]
 

 

   December 31,     March 31,  
 

 

   2016     2017  
 

BAK Tianjin

 $ 194,774   $ 172,434  
 

Shenzhen BAK

   2,294,085     5,135,950  
 

 

 $ 2,488,859   $ 5,308,384