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Inventory
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
INVENTORY

4. INVENTORY


Inventory consists of the following:


   March 31,
2021
   December 31,
2020
 
   (Unaudited)     
Finished goods  $99,549   $100,967 
Work-in-process   21,729    22,038 
Raw materials   60,851    61,718 
Allowance for inventory valuation and obsolescence loss   (182,129)   (184,723)
Inventory, net  $-   $-