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Concentrations and Credit Risk (Details Textual) | 9 Months Ended
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Sep. 30, 2020
Zhengzhou BAK New Energy Vehicle Co., Ltd [Member] |
Concentrations and Credit Risk (Textual) |
Concentrations and credit risk, description | 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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