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INVENTORIES (Tables)
9 Months Ended
Sep. 30, 2020
Inventory Disclosure [Abstract]  
Schedule of inventories, by component
Inventories, by component, consisted of:​
September 30,
2020
December 31,
2019
Raw materials$112,296 $111,653 
Work in process119,397 123,750 
Finished goods143,484 140,392 
Total$375,177 $375,795