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3. INVENTORIES (Tables)
9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of inventory
   September 30,
2019
  December 31,
2018
       
Raw materials  $23,471,487   $14,019,668 
Work-in-process   13,955,875    —   
Finished goods   2,857,977    4,596,501 
Total inventories  $40,285,339   $18,616,169