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Inventories
6 Months Ended
Jun. 30, 2018
Inventory Disclosure [Abstract]  
Inventories

3. Inventories

 

Inventories consist of the following:

 

    June 30, 2018     December 31, 2017  
             
Raw materials   $ 2,480,765     $ 2,528,270  
Work in process     353,800       4,836  
Finished goods     2,967,617       2,515,637  
Reserve for obsolescence     (4,256,789 )     (3,901,772 )
Total inventory   $ 1,545,393     $ 1,146,971