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Note 16 - Subsequent Events	6 Months Ended
	Feb. 28, 2023
Notes to Financial Statements
Subsequent Events [Text Block]	16. SUBSEQUENT EVENTS On April 7, 2023, the Company’s wholly-owned subsidiary in China, NTIC China, entered into a line of credit agreement with China Construction Bank Corporation, which provides NTIC China with a RMB 10,000,000 (USD $1.45 million) revolving line of credit. The term of the credit agreement is for one year, after which an extension of the agreement is required. The credit agreement has an annual interest rate of 3.25% with interest due monthly. The line of credit is secured by various property owned by NTIC China and the line of credit agreement contains certain financial and other covenants.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI https://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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