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Summary of significant accounting policies (Detail Textuals) | 12 Months Ended
--- | ---
Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($)
Accounting Policies [Line Items] |  |  |
Sales | $ 3,369,258 | $ 2,081,084 |
Operating expenses | 3,370,857 | 1,926,310 |
Net income (Loss) | 4,234 | 154,774 |
Cash maintained with People's Republic of China of which no deposits are covered by insurance | $ 4,918,183 | $ 2,590,539 |
Exchange rates (per RMB1) | 0.1456 | 0.1503 |
Applicable VAT rate | 13% or 17 |  |
Tax Rate | 12% or 16 |  |
Shipping and handling |  |  |
Accounting Policies [Line Items] |  |  |
Shipping and handling expenses | $ 307,374 | $ 104,560 | $ 57,621
Average |  |  |
Accounting Policies [Line Items] |  |  |
Exchange rates (per RMB1) | 0.1530 | 0.1468 | 0.1531

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