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Concentrations and Credit Risk (Tables) | 6 Months Ended
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Jun. 30, 2021
Risks and Uncertainties [Abstract] |
Schedule of revenue by major customers by reporting segments |
|  | Three months ended June 30, |
|  | 2020 |  |  | 2021 |
Customer A |  | $ | 2,584,606 |  |  |  | 55.89 | % |  | $ | * |  |  |  | * |
Customer B |  |  | 1,626,944 |  |  |  | 35.18 | % |  |  | 880,947 |  |  |  | 14.96 | %
Customer E |  |  | * |  |  |  | * |  |  |  | 1,917,054 |  |  |  | 32.55 | %
Customer F |  |  | * |  |  |  | * |  |  |  | 1,505,794 |  |  |  | 25.57 | %
|  | Six months ended June 30, |
|  | 2020 |  |  | 2021 |
Customer A |  | $ | 4,677,699 |  |  |  | 40.59 | % |  | $ | 2,908,330 |  |  |  | 19.00 | %
Customer B |  |  | 2,009,845 |  |  |  | 17.44 | % |  |  | 1,589,682 |  |  |  | 10.39 | %
Customer C |  |  | 3,767,605 |  |  |  | 32.69 | % |  |  | * |  |  |  | * |
Customer D |  |  | * |  |  |  | * |  |  |  | 2,279,538 |  |  |  | 14.89 | %
Customer E |  |  | * |  |  |  | * |  |  |  | 2,279,103 |  |  |  | 14.89 | %
Customer F |  |  | * |  |  |  | * |  |  |  | 1,905,460 |  |  |  | 12.45 | %
Schedule of accounts receivable by major customer |
|  | December 31, 2020 |  |  | June 30, 2021 |
Customer A |  | $ | 3,148,737 |  |  |  | 11.23 | % |  | $ | 5,995,134 |  |  |  | 28.16 | %
Zhengzhou BAK Battery Co., Ltd (note a) |  |  | 15,258,164 |  |  |  | 54.42 | % |  |  | 6,422,003 |  |  |  | 30.16 | %
Schedule of net purchase by suppliers |
|  | Three months ended June 30, |
|  | 2020 |  |  | 2021 |
Supplier A |  | $ | 294,786 |  |  |  | 23.52 | % |  | $ | * |  |  |  | * |
|  | Six months ended June 30, |
|  | 2020 |  |  | 2021 |
Zhengzhou BAK Battery Co., Ltd (note a) |  | $ | * |  |  |  | * |  |  | $ | 1,259,309 |  |  |  | 10.05 | %
Shenzhen BAK |  |  | 3,841,680 |  |  |  | 64.96 | % |  |  | * |  |  |  | * |
Schedule of transactions |
|  | December 31, 2020 |  |  | June 30, 2021 |
Supplier B |  | $ | 9,272,478 |  |  |  | 47.40 | % |  | $ | * |  |  |  | * |
Supplier C |  |  | 2,017,814 |  |  |  | 10.32 | % |  |  | 967,239 |  |  |  | 18.61 | %
Supplier D |  |  | * |  |  |  | * |  |  |  | 708,637 |  |  |  | 13.63 | %
Schedule of transactions |
|  | Three months ended June 30, |  |  | Six months ended June 30, |
|  | 2020 |  |  | 2021 |  |  | 2020 |  |  | 2021 |
Sales of finished goods and raw materials to |  |  |  |  |  |  |  |  |  |  |  |
BAK Shenzhen (note b) |  |  | - |  |  |  | 18,402 |  |  |  | 69,226 |  |  |  | 18,402 |
Zhengzhou BAK Battery Co., Ltd (note a) |  |  | - |  |  |  | 33,292 |  |  |  | - |  |  |  | 141,582 |
Zhengzhou BAK Electronics Co., Ltd (note c) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 412,353 |
|  | December 31, 2020 |  |  | June 30, 2021 |
Trade accounts and bills receivables, net |  |  |  |  |  |
Zhengzhou BAK Electronics Co., Ltd (note c) |  | $ | - |  |  | $ | 467,748 |
Zhengzhou BAK New Energy Vehicle Co., Ltd (note d) |  |  | 1,759,050 |  |  |  | 871,633 |

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