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v3.20.1

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 |

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