Commitment and contingency (Detail Textuals)	12 Months Ended
Sep. 30, 2018 USD ($) Office_space building	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Number of office spaces on lease \| Office_space	1
Number of factory buildings on lease \| building	1
Rental expense \| $	$ 77,255	$ 31,773	$ 8,232

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717

Name:	us-gaap_OperatingLeasesRentExpenseNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration