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INTANGIBLE ASSETS - Summary of intangible assets (Details) | 12 Months Ended
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Sep. 30, 2021 USD ($)
INTANGIBLE ASSETS |
Customer relationships (10-year useful life) | $ 621,000
Intellectual property (5-15 years) | 917,350
Intangible assets, gross | 1,538,350
Less: Accumulated amortization | 1,001,995
Impairment losses | $ 536,355

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