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Inventories (Tables)
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of inventory
Inventories consist of the following:

March 31,
2021
December 31,
2020
Raw materials$73,654 $71,807 
Work-in-process18,429 15,864 
Finished goods113,714 107,197 
Total$205,797 $194,868