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Inventories (Tables)
12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Schedule of inventory
Inventories consist of the following at December 31:
 
 
2019
 
2018
Raw materials
$
51,103

 
$
45,898

Work in process
15,142

 
15,000

Finished goods
98,371

 
93,701

 
$
164,616

 
$
154,599