Summary of significant accounting policies (Details 1) |
6 Months Ended |
|---|---|
Mar. 31, 2026 | |
| Machinery and Equipment [Member] | |
| Property plant and equipment useful life | 10 years |
| Property and Building [Member] | |
| Property plant and equipment useful life | 20 years |
| Vehicles [Member] | |
| Property plant and equipment useful life | 4 years |
| Office Equipment [Member] | Minimum [Member] | |
| Property plant and equipment useful life | 3 years |
| Office Equipment [Member] | Maximum [Member] | |
| Property plant and equipment useful life | 5 years |