Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- SIGNIFICANT ACCOUNTING POLICIES (Policies)
Notes Tables
Notes Details

INCOME TAXES - Additional Information (Details)

v3.21.4

INCOME TAXES - Additional Information (Details)	12 Months Ended
INCOME TAXES - Additional Information (Details)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 CNY (¥)	Sep. 30, 2016 USD ($)
Deferred tax assets	$ 353,460	$ 724,612	$ 289,756		¥ 353,460
Income tax rate	15.00%	15.00%	15.00%
Statute of limitations period (in years)	3 years
Unrecognized tax benefits	$ 2,354,832	$ 3,188,615	$ 4,176,537	$ 2,354,832		$ 4,098,783
State Administration of Taxation, China
Income tax rate	25.00%
State Administration of Taxation, China \| Zhengkang
Income tax rate	15.00%
Preferential tax rate, validity period	3 years
State Administration of Taxation, China \| Zhengfeng and Weijia
Income tax rate	25.00%
Inland Revenue, Hong Kong \| ZK Pipe Industry Co
Income tax rate	16.50%
Uganda Revenue Authority \| ZK Uganda
Income tax rate	30.00%

- Definition

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

+ References

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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- Definition

Amount of unrecognized tax benefits.

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- Definition

Represents the preferential tax rate validity period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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