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Inventories (Details) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 23,353 $ 25,985
Work in progress 768 779
Finished goods 791,162 1,060,615
Total inventories 815,283 1,087,379
Less: inventory impairment loss (2,363) (2,363)
Inventories, net $ 812,920 $ 1,085,016