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Related party transactions (Detail Textuals) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2009 USD ($) | Oct. 31, 2009 CNY (¥) | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($)
Related Party Transaction [Line Items] |  |  |  |  |
Revenue from Related Parties |  |  | $ 155,418 | $ 799,142 | $ 1,012,789
Forasen Group Co., Ltd |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Monthly rent | $ 3,427 | ¥ 22,400 |  |  |
Terms of lease | 10 years | 10 years |  |  |
Forasen Group Co., Ltd | Total sales |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Revenue from Related Parties |  |  | $ 155,418 | $ 799,142 | $ 1,012,789
Concentration risk, percentage |  |  | 1.00% | 3.00% | 5.00%

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- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13531-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13537-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
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