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Inventories (Tables)
9 Months Ended
Sep. 30, 2017
SCHEDULE OF INVENTORIES [Table Text Block]
 

 

  December 31,     September 30,  
 

 

  2016     2017  
 

Raw materials

$ 2,570,942   $ 1,999,072  
 

Work in progress

  1,333,949     4,756,237  
 

Finished goods

  13,190,031     11,491,962  
 

 

$ 17,094,922   $ 18,247,271