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Note 12 - Segment and Geographic Information (Tables)

3 Months Ended

Nov. 30, 2024

Notes Tables

Reconciliation of Revenue from Segments to Consolidated [Table Text Block]

		Three Months Ended November 30,
		2024				2023
ZERUST® net sales		$	15,475,803			$	15,405,745
Natur-Tec® net sales			5,862,590				4,775,930
Total net sales		$	21,338,393			$	20,181,675

Reconciliation of Cost of Goods Sold from Segments to Consolidated [Table Text Block]

		November 30, 2024				% of Product Sales*				November 30, 2023				% of Product Sales*
Direct cost of goods sold
ZERUST®		$	8,678,706				56.1	%		$	8,744,024				56.8	%
Natur-Tec®			3,689,183				62.9	%			3,228,583				67.6	%
Indirect cost of goods sold			807,551			NA					874,794			NA
Total net cost of goods sold		$	13,175,440							$	12,847,401

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

		Three Months Ended November 30,
		2024				2023
Inside the U.S. to unaffiliated customers		$	13,088,319			$	12,097,843
Outside the U.S. to:
Joint ventures in which the Company is a shareholder directly and indirectly			767,456				851,452
Unaffiliated customers			7,482,618				7,232,380
		$	21,338,393			$	20,181,675

		Three Months Ended November 30,
		2024				% of Total Fees for Services Provided to Joint Ventures				2023				% of Total Fees for Services Provided to Joint Ventures
Poland		$	220,010				17.1	%		$	198,017				15.9	%
Germany			206,329				16.1	%			205,643				16.5	%
Japan			148,538				11.6	%			136,081				10.9	%
Finland			131,460				10.2	%			103,744				8.3	%
United Kingdom			116,226				9.1	%			63,149				5.1	%
Thailand			94,165				7.3	%			79,438				6.4	%
France			79,064				6.2	%			121,966				9.8	%
Czech Republic			72,631				5.7	%			77,812				6.2	%
South Korea			67,701				5.3	%			74,957				6.0	%
Sweden			66,928				5.2	%			110,536				8.9	%
Other			81,067				6.3	%			77,615				6.2	%
		$	1,284,119				100.0	%		$	1,248,958				100.0	%

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

		At November 30, 2024				At August 31, 2024
China		$	5,453,786			$	5,627,202
Other			1,212,917				1,217,400
United States			10,386,536				9,421,051
Total property and equipment, net		$	17,053,239			$	16,265,653

Revenue from External Customers by Geographic Areas [Table Text Block]

		Three Months Ended November 30,
		2024				2023
China		$	3,994,769			$	3,678,523
Brazil			1,385,194				1,529,623
India			6,045,735				5,180,391
Other			2,430,077				2,560,757
United States			7,482,618				7,232,381
Total net sales		$	21,338,393			$	20,181,675

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