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Credit facilities (Details 1) - USD ($)	6 Months Ended	12 Months Ended
	Mar. 31, 2025	Sep. 30, 2024
Defined Benefit Plan Disclosure [Line Items]
long-term bank loans	$ 826,822
Weizhong Bank [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest rate	10.44%
long-term bank loans	$ 275,607
Bankof Chengdus [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest rate	4.00%
Bankof Chengdu [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest rate	3.60%	4.00%
long-term bank loans	$ 551,215	$ 569,995
Huaneng Guicheng Trust [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest rate	10.44%
long-term bank loans	$ 137,804

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-3

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-5

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+ References

No definition available.

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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(20))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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