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Selling Expenses (Details) - Schedule of selling expenses - USD ($)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Schedule of selling expenses [Abstract]      
Salaries and social welfare $ 58,915 $ 761,774 $ 1,765,019
Travelling expenses 1,256 34,244 170,931
Service fee 12,369 41,437
Advertising & promotion 27,908 19,811 56,259
Entertainment fee 3,377 4,848 42,656
Office expense 1,960
Others 364 2,224 4,567
Total Selling expenses $ 91,820 $ 835,270 $ 2,082,829