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INVENTORIES (Tables)
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of inventories, by component
Inventories, by component net of reserves, consisted of:
March 31,
2021
December 31,
2020
Raw materials$115,645 $116,029 
Work in process124,097 115,870 
Finished goods154,437 147,480 
Total$394,179 $379,379