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3. Inventories (Tables)
6 Months Ended
Jun. 30, 2017
Inventories Tables  
Inventories
Inventories consist of :  

June 30,

2017

   

December 31,

2016

 
Materials   $ 1,651,902     $ 888,830  
Work in process     90,344       27,708  
Finished goods     3,517,847       4,010,074  
Total   $ 5,260,093     $ 4,926,612