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Subsequent Event (Details) - Loan from related party - ChaoYang Xinshuo - ChaoYang XinMei High Purity Semiconductor Materials Co., Ltd $ in Millions | 1 Months Ended
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Oct. 31, 2021 USD ($) item | Sep. 30, 2021 item
Subsequent Event |  |
Loan received from number of minority investors |  | 1
Number of minority investors |  | 2
Subsequent Event |  |
Subsequent Event |  |
Loan amount | $ | $ 0.9 |
Interest rate | 6.50% |
Loan received from number of minority investors | 1 |
Number of minority investors | 2 |

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