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INVENTORIES (Tables)
9 Months Ended
Sep. 30, 2021
INVENTORIES  
Schedule of components of inventories

September 30, 

December 31, 

    

2021

    

2020

Parts and raw materials

$

258,281

$

141,337

Work in process

 

21,569

 

13,702

Finished goods

 

61,650

 

66,307

Total

$

341,500

$

221,346