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Inventories (Tables)
3 Months Ended
Mar. 31, 2019
Inventory Disclosure [Abstract]  
Schedule of inventories
  

March 31,

2019

  

December 31,

2018

 
Raw materials  $4,808,916   $4,320,131 
Finished goods   8,000,017    8,049,791 
Inventories, gross   12,808,933    12,369,922 
           
Inventory reserves   (284,109)   (284,109)
           
Inventories, net  $12,524,824   $12,085,813