Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Property and Equipment, Net (Details)

v3.21.1
Property and Equipment, Net (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment [Abstract]      
Depreciation expenses $ 73,714 $ 149,307 $ 88,289