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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 |

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- 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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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