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Inventories - Schedule of Inventories (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 3,663 $ 3,437
Finished goods 427,942 453,634
Cost of projects 34,792 49,233
Inventories, gross 466,397 506,304
Allowance for slow-moving or obsolete inventories (211,719) (203,366)
Inventories, net $ 254,678 $ 302,938