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Credit facilities (Details) - USD ($)	6 Months Ended	12 Months Ended
	Mar. 31, 2025	Sep. 30, 2024
Defined Benefit Plan Disclosure [Line Items]
Short term loans banks	$ 2,487,357	$ 1,859,610
Bankof China [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest rate	3.10%	3.45%
Short term loans banks	$ 689,019	$ 427,497
Bankof China 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest rate	3.10%
Short term loans banks	$ 413,411
Bankof Chengdu [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest rate	3.60%	4.00%
Short term loans banks	$ 150,206	$ 155,324
Bankof Chengdu 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest rate	3.60%	4.00%
Short term loans banks	$ 413,411	$ 427,497
Rural Commercial Bankof China [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest rate	4.00%	4.00%
Short term loans banks	$ 275,607	$ 284,998
Industrialand Commercial Bankof China [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest rate	3.45%	3.45%
Short term loans banks	$ 545,703	$ 564,294

X

- Definition

Dividend or interest rate associated with the financial instrument issued in exchange for the original debt being converted in a noncash or part noncash transaction. Noncash are transactions that affect recognized assets or liabilities but that do not result in cash receipts or cash payments. Part noncash refers to that portion of the transaction not resulting in cash receipts or cash payments.

+ References

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-Topic 230
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-Section 50
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+ References

No definition available.

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- Definition

Amount of borrowings from a bank classified as other, maturing within one year or operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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