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Note 5 - Leases (Details Textual)			12 Months Ended
	Sep. 01, 2021 USD ($)	Sep. 01, 2021 CNY (¥) a	Dec. 31, 2021 USD ($)
Operating Lease, Payments			$ 1,057,810
Finance Lease, Principal Payments			470,389
Operating Expense [Member]
Operating Lease, Payments			1,135,814
Other Nonoperating Income (Expense) [Member]
Operating Lease, Expense			$ 265,221
CHINA
Area of Real Estate Property (Acre) | a		8,524.67
Lease Contractual Agreement, Percentage, Discount		50.00%
CHINA | Minimum [Member]
Lessee, Operating Lease, Term of Contract (Year)		8 years
CHINA | Effective to August 31 2025 [Member]
Lease, Cost Per Square Meter | ¥		¥ 30
Lease, Cost, Total	$ 40,918	255,740
CHINA | Effective on September 1 2025 [Member]
Lease, Cost Per Square Meter | ¥		33.6
Lease, Cost, Total	$ 45,829	¥ 286,429

X

- Definition

The monthly lease discount according to the lease contract agreement.

+ References

No definition available.

+ Details

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X

- Definition

Amount of monthly lease price recognized by lessee for lease contract by unit.

+ References

No definition available.

+ Details

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X

- Definition

Area of a real estate property.

+ References

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X

- Definition

Amount of cash outflow for principal payment on finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 5
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918643-209977

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-Section 50
-Paragraph 4
-Subparagraph (g)(1)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980

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X

- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
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-Section 55
-Paragraph 53
-URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971

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X

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980

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X

- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 4
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-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977

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X

- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 5
-Subparagraph (c)
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-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980

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