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Concentrations and Credit Risk (Details 2) - USD ($) | 3 Months Ended | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Supplier A [Member] |  |  |  |  |  |  |  |  |
Net purchase |  |  | [1] | $ 1,949,106 |  |  | [1] | $ 2,940,420 |
Concentration risk, percentage of net purchase |  |  | [1] | 22.67% |  |  | [1] | 20.43% |
Supplier B [Member] |  |  |  |  |  |  |  |  |
Net purchase |  | $ 4,329,602 |  |  | [1] | $ 4,329,602 |  |  | [1]
Concentration risk, percentage of net purchase |  | 72.65% |  |  | [1] | 36.47% |  |  | [1]
Zhengzhou BAK New Energy Vehicle Co., Ltd [Member] |  |  |  |  |  |  |  |  |
Net purchase | [2] |  | [1] | $ 3,838,213 |  |  | [1] | $ 3,838,213 |
Concentration risk, percentage of net purchase | [2] |  | [1] | 44.64% |  |  | [1] | 26.67% |
Shenzhen BAK [Member] |  |  |  |  |  |  |  |  |
Net purchase | [3] |  |  |  |  | $ 3,841,680 |  |  | [1]
Concentration risk, percentage of net purchase | [3] |  |  |  |  | 32.35% |  |  | [1]
[1] | Comprised less than 10% of net purchase for the respective period.
[2] | 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
[3] | Mr. Xiangqian Li is a director of BAK Shenzhen and Shenzhen BAK

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