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Inventory (Tables)
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of inventory

   As of
March 31, 2021
   As of
December 31, 2020
 
Raw materials  $660,547   $631,019 
Work-in-process   1,432,522    1,438,482 
Finished goods   29,381    23,013 
Total  $2,122,450   $2,092,514