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Loans (Details 2) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Advance from related parties $ 399,149 $ 13,346,758
Advances from unrelated third parties 7,351,587 14,147,801
Tianjin BAK New Energy Research Institute Co., Ltd (“Tianjin New Energy”) [Member]    
Advance from related parties 11,095,070
Mr. Xiangqian Li, the Company's Former CEO [Member]    
Advance from related parties 100,000 100,000
Mr. Yunfei Li [Member]    
Advance from related parties 212,470 116,307
Shareholders [Member]    
Advance from related parties 86,679 2,035,381
Mr. Wenwu Yu [Member]    
Advances from unrelated third parties 30,135 146,813
Ms. Longqian Peng [Member]    
Advances from unrelated third parties 646,273 654,230
Mr. Shulin Yu. [Member]    
Advances from unrelated third parties 517,018
Jilin Province Trust Co. Ltd [Member]    
Advances from unrelated third parties 5,687,204
Suzhou Zhengyuanwei Needle Ce Co., Ltd [Member]    
Advances from unrelated third parties $ 71,808