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Concentrations and Credit Risk (Tables) | 12 Months Ended
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Dec. 31, 2020
Concentrations and Credit Risk [Abstract] |
Schedule of revenue by major customers by reporting segments |
|  | Year ended |  |  | Year ended |
Sales of finished goods and raw materials |  | December 31, 2019 |  |  | December 31, 2020 |
Customer A |  | $ | 7,222,245 |  |  |  | 32.54 | % |  | $ | 8,322,504 |  |  |  | 22.15 | %
Customer B |  |  | * |  |  |  | * |  |  |  | 3,806,110 |  |  |  | 10.13 | %
Customer C |  |  | 3,308,638 |  |  |  | 14.91 | % |  |  | * |  |  |  | * |
Zhengzhou BAK Battery Co., Ltd (note a) |  |  | 3,961,050 |  |  |  | 17.85 | % |  |  | 12,770,075 |  |  |  | 33.99 | %
| * | Comprised less than 10% of net revenue for the respective period.
Schedule of accounts receivable by major customer |
|  | December 31, 2019 |  |  | December 31, 2020 |
Customer A |  | $ | 1,725,293 |  |  |  | 21.93 | % |  | $ | 3,148,737 |  |  |  | 11.23 | %
Customer C |  |  | 1,713,628 |  |  |  | 21.78 | % |  |  | * |  |  |  | * |
Customer D |  |  | 902,309 |  |  |  | 11.47 | % |  |  | * |  |  |  | * |
Customer E |  |  | 830,821 |  |  |  | 10.56 | % |  |  | * |  |  |  | * |
Zhengzhou BAK Battery Co., Ltd (note a) |  |  | * |  |  |  | * |  |  |  | 15,258,164 |  |  |  | 54.42 | %
* | Comprised less than 10% of net accounts receivable for the respective period.
Schedule of net purchase by suplier |
|  | Year ended December 31, 2019 |  |  | Year ended December 31, 2020 |
Supplier A |  | $ | * |  |  |  | * |  |  | $ | 12,396,483 |  |  |  | 48.90 | %
Supplier B |  |  | 2,920,966 |  |  |  | 21.40 | % |  |  | * |  |  |  | * |
Zhengzhou BAK New Energy Vehicle Co., Ltd (note b) |  |  | 3,812,819 |  |  |  | 27.93 | % |  |  | * |  |  |  | * |
Shenzhen BAK (note c) |  |  | * |  |  |  | * |  |  |  | 3,884,309 |  |  |  | 15.32 | %
| * | Comprised less than 10% of net purchase for the respective period.
Schedule of accounts payable by suplier |
|  | December 31, 2019 |  |  | December 31, 2020 |
Supplier A |  | $ | * |  |  |  | * |  |  | $ | 9,272,478 |  |  |  | 47.40 | %
Supplier C |  |  | * |  |  |  | * |  |  |  | 2,017,814 |  |  |  | 10.32 | %
Supplier D |  |  | 1,126,482 |  |  |  | 10.10 | % |  |  | * |  |  |  | * |
Schedule of transactions with the former subsidiaries |
|  | December 31, 2019 |  |  | December 31, 2020 |
Purchase of inventories from |  |  |  |  |  |
BAK Shenzhen (note c) |  | $ | 63,950 |  |  |  | - |
Sales of finished goods and raw materials to |  |  |  |  |  |  |  |
BAK Shenzhen (note c) |  |  | 526,719 |  |  |  | - |
Zhengzhou BAK New Energy Technology Co., Ltd (note b) |  |  | - |  |  |  | 1,562,637 |
Notes: |
a | Mr. Xiangqian Li, the Company's former CEO, is a director of Zhengzhou BAK Battery Co., Ltd. Up to the date of this report, Zhengzhou BAK Battery Co., Ltd. repaid $7,691,611 to the Company.
b | Mr. Xiangqian Li is a director of Zhengzhou BAK New Energy Vehicle Co., Ltd, which has 29% equity interests in Zhengzhou BAK New Energy Technology Co., Ltd. As of December 31, 2019 and 2020, receivable from Zhengzhou BAK New Energy Technology Co., Ltd were nil and $1,759,050, respectively, was included in trade accounts and bills receivable, net, Up to the date of this report, Zhengzhou BAK New Energy Technology Co., Ltd repaid $741,353 to the Company.
c | Mr. Xiangqian Li is a director of Shenzhen BAK and BAK Shenzhen.

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- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. + References No definition available. + Details
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