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Concentrations and Credit Risk (Details 4) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Sales of finished goods $ 4,624,247 $ 4,270,936 $ 11,525,521 $ 9,442,611
Bak Shenzhen [Member]        
Purchase of inventories [1] 65,102 65,102
Sales of finished goods [1] 685,211 69,226 769,052
Shenzhen BAK [Member]        
Purchase of inventories [1] 65,102 $ 3,841,680 [1]
Sales of finished goods [1]    
[1] Mr. Xiangqian Li, the former CEO, is a director of this company.