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Schedule of reconciliation PRC statutory effective income tax rate (Details)
12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2022
Income Tax Disclosure [Abstract]      
Computed income tax benefit with PRC statutory income tax rate 25.00% 25.00% 25.00%
Effect of preferential tax rate (8.00%) (8.00%) (6.00%)
Additional deduction of qualified R&D expenditures 1.00% 3.00% 2.00%
Non-deductible expenses
Effect of expiration of NOL (11.00%)
Effect of true-up on NOL (5.00%)
Change in valuation allowance (2.00%) (20.00%) (21.00%)
Income tax expenses