XML 66 R57.htm IDEA: XBRL DOCUMENT v3.25.2

Concentration and risks (Details Narrative)	6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Concentration Risk [Line Items]
Credit risk description	the insurance coverage for cash deposits of each bank is RMB500,000. As of March 31, 2025, cash and restricted cash balance of RMB14,328,291 ($1,974,490) was deposited with financial institutions located in China, of which RMB12,610,367 ($1,737,755) was subject to credit risk. While management believes that these financial institutions are of high credit quality, it also continually monitors their credit worthiness.
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | One Customer [Member]
Concentration Risk [Line Items]
concentration risk	27.00%	21.20%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Two Customer [Member]
Concentration Risk [Line Items]
concentration risk	22.60%	15.20%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Three Customer [Member]
Concentration Risk [Line Items]
concentration risk	16.10%	11.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | One Vendor [Member]
Concentration Risk [Line Items]
concentration risk	57.20%	50.50%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | One Customer [Member]
Concentration Risk [Line Items]
concentration risk	22.40%	21.90%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two Customer [Member]
Concentration Risk [Line Items]
concentration risk	13.60%	13.70%
Accounts Payable [Member] | Customer Concentration Risk [Member] | One Vendor [Member]
Concentration Risk [Line Items]
concentration risk	17.80%	28.60%
Accounts Payable [Member] | Customer Concentration Risk [Member] | Two Vendor [Member]
Concentration Risk [Line Items]
concentration risk		22.80%
Accounts Payable [Member] | Customer Concentration Risk [Member] | Three Vendor [Member]
Concentration Risk [Line Items]
concentration risk		10.50%

X

- References

No definition available.

+ Details

Name:	CIK0001979610_CreditRiskDescription
Namespace Prefix:	CIK0001979610_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478785/954-310-50-2

+ Details

Name:	us-gaap_ConcentrationRiskLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-21

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-20

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-20

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=CIK0001979610_OneCustomerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=CIK0001979610_TwoCustomerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=CIK0001979610_ThreeCustomerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=CIK0001979610_OneVendorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsPayableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=CIK0001979610_TwoVendorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=CIK0001979610_ThreeVendorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: