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TAXES - Additional Information (Details) - USD ($) | 12 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |
Corporate income tax rate (in percent) | 7.60% | 14.90% | 14.90% |
Decrease in taxes due to tax holiday | $ 458,163 | $ 603,091 | $ 710,083 |
Benefit of the tax holidays on net income per share | $ 0.013 | $ 0.020 | $ 0.024 |
Chengdu QLS and subsidiaries |  |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |
Favorable tax rate (as a percent) | 15.00% | 15.00% | 15.00% | 15.00%
HNTE |  |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |
Favorable tax rate (as a percent) | 15.00% | 15.00% | 15.00% |
Hong Kong | Scenario One |  |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |
Favorable tax rate (as a percent) |  |  | 8.25% |
Base profit for calculating tax rate |  |  | $ 2,000,000 |
Hong Kong | Scenario Two |  |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |
Favorable tax rate (as a percent) |  |  | 16.50% |
Base profit for calculating tax rate |  |  | $ 2,000,000 |
China |  |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |  |
Corporate income tax rate (in percent) | 25.00% |  |  |

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