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Inventories
12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Inventories

6. Inventories

 

    2019     2018  
             
Completed goods   $ 3,818,876     $ 3,770,071  
Work in progress     416,950       150,333  
Raw materials and supplies     4,946,960       4,807,305  
    $ 9,182,786     $ 8,727,709