Summary of significant accounting policies (Details Narrative) - USD ($) |
6 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Sep. 30, 2025 |
|
| Accounting Policies [Abstract] | |||
| Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax | $ 235,732 | $ 224,393 | |
| Description of Difference between Reported Amount and Reporting Currency Denominated Amount | The balance sheet amounts, with the exception of shareholders’ equity on March 31, 2026 and September 30, 2025 were translated at 6.8980 RMB and 7.1190 RMB to $1.00, respectively. The shareholders’ equity accounts were stated at their historical rate. The average translation rates applied to statement of income accounts for the six months ended March 31, 2026 and 2025 were 7.0061 RMB and 7.2308 RMB to $1.00, respectively. The exchanges rates used for translation from Hong Kong dollar to USD was 7.8000, a pegged rate determined by the linked exchange rate system in Hong Kong. | ||
| Federal deposit insurance corporation | $ 250,000 | ||
| Restricted Cash, Noncurrent | 300,000 | 300,000 | |
| Allowance for accounts receivable | 761,816 | 618,524 | |
| Allowance of contract assets | $ 933,944 | 457,308 | |
| Useful life | 5 years | ||
| Amortization expense | $ 13,240 | $ 12,828 | |
| Dilutive shares | 0 | 0 | |
| Total expenses | $ 76,489 | $ 62,095 | |
| Statutory reserves | $ 186,225 | $ 186,225 | |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of amortization expense for finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation. No definition available.
|
| X | ||||||||||
- Definition Amount of allowance for credit loss for right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Description of why the actual reporting currency-denominated balances differ from the amounts reported for financial reporting purposes, including the reasons for using two different rates with respect to remeasurement and translation. For example, in certain jurisdictions, companies may utilize an official exchange rate and also a parallel rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of expense for employee benefit and equity-based compensation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Useful life of finite-lived intangible asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|