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Inventories
3 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
Inventories

5. Inventories

 

    March 31,
2020
    December 31,
2019
 
             
Completed goods   $ 4,660,303     $ 3,818,876  
Work in progress     297,824       416,950  
Raw materials and supplies     3,944,746       4,946,960  
    $ 8,902,873     $ 9,182,786