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Inventory (Details) - Schedule of inventory - USD ($)
Mar. 31, 2021
Dec. 31, 2020
Schedule of inventory [Abstract]    
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