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Inventories
6 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
Inventories

5. Inventories

 

    June 30, 2020     December 31, 2019  
             
Completed goods   $ 4,394,745     $ 3,818,876  
Work in progress     -       416,950  
Raw materials and supplies     3,501,048       4,946,960  
    $ 7,895,793     $ 9,182,786