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Inventories, net (Details) - USD ($) | Sep. 30, 2024 | Sep. 30, 2023
--- | --- | ---
Inventories |  |
Raw materials | $ 3,635,548 | $ 1,619,534
Finished goods | 0 | 1,224,555
Sub-total | 3,635,548 | 2,844,089
Less: allowance for inventories | (306,204) | (188,856)
Total | $ 3,329,344 | $ 2,655,233

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