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Payables to Former Subsidiaries (Details) - USD ($)
Mar. 31, 2020
Dec. 31, 2019
Payables to former subsidiaries $ 5,684,401 $ 1,483,352
BAK Tianjin [Member]    
Payables to former subsidiaries 10,288
BAK Shenzhen [Member]    
Payables to former subsidiaries 1,394,391 1,483,352
Shenzhen BAK [Member]    
Payables to former subsidiaries $ 4,279,722