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Concentrations and Credit Risk (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Sales of finished goods and raw materials |  | $ 10,620,656 |  | $ 8,089,804 |  | $ 22,146,177 |  | $ 17,532,415 |
Zhengzhou BAK Battery Co., Ltd [Member] |  |  |  |  |  |  |  |  |
Sales of finished goods and raw materials | [1],[2] | $ 4,269,312 |  | $ 1,941,101 |  | $ 4,269,312 |  | $ 1,941,101 |
Concentration risk, percentage | [1],[2] | 40.20% |  | 23.99% |  | 19.28% |  | 11.07% |
Zhengzhou BAK New Energy Technology Co., Ltd# [Member] |  |  |  |  |  |  |  |  |
Sales of finished goods and raw materials | [3] | $ 1,896,207 |  |  | [1] |  |  |  |
Concentration risk, percentage | [3] | 17.85% |  |  | [1] |  |  |  |
Customer A [Member] |  |  |  |  |  |  |  |  |
Sales of finished goods and raw materials |  | $ 1,588,192 |  | $ 2,118,783 |  | $ 5,793,828 |  | $ 5,994,110 | [1]
Concentration risk, percentage |  | 14.95% |  | 26.19% |  | 26.16% |  | 34.19% | [1]
Customer B [Member] |  |  |  |  |  |  |  |  |
Sales of finished goods and raw materials |  |  | [1] | $ 2,264,415 |  |  | [1] | $ 3,330,675 |
Concentration risk, percentage |  |  | [1] | 27.99% |  |  | [1] | 19.00% |
Customer C [Member] |  |  |  |  |  |  |  |  |
Sales of finished goods and raw materials |  | $ 1,278,893 |  |  | [1] | $ 2,908,728 |  |  | [1]
Concentration risk, percentage |  | 12.04% |  |  | [1] | 13.13% |  |  | [1]
Customer D [Member] |  |  |  |  |  |  |  |  |
Sales of finished goods and raw materials | [1] |  |  |  |  | $ 3,787,585 |  |  |
Concentration risk, percentage | [1] |  |  |  |  | 17.10% |  |  |
[1] | Comprised less than 10% of net revenue for the respective period.
[2] | Mr. Xiangqian Li, the Company’s former CEO, is a director of Zhengzhou BAK Battery Co., Ltd.
[3] | 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

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