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Credit facilities (Details Narrative) - USD ($) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Sep. 30, 2024
Credit Facilities |  |  |
Interest expense pertaining | $ 57,566 | $ 67,109 |
guarantee description | As of March 31, 2025, letters of guarantee were provided by banks with an aggregate amount of $514,601 ($252,085 maturing within one year and $262,516 maturing within two years) to secure the Company’s assurance-type warranties. The letters of guarantee were pledged by restricted cash held by the Company amounted to $194,647 and third parties, that were counter guaranteed by the Company |  | As of September 30, 2024, letters of guarantee were provided by banks with an aggregate amount of $348,125 ($146,845 maturing within one year and $201,280 maturing within two years) to secure the Company’s assurance-type warranties. The letters of guarantee were pledged by restricted cash held by the Company amounted to $348,399

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- Definition Interest and debt related expenses associated with nonoperating financing activities of the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
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