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Note 11 - Segment and Geographic Information (Tables)

9 Months Ended

May 31, 2024

Notes Tables

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

		Three Months Ended								Nine Months Ended
		May 31, 2024				May 31, 2023				May 31, 2024				May 31, 2023
ZERUST® net sales		$	14,837,235			$	16,100,674			$	45,461,075			$	45,929,422
Natur-Tec® net sales			5,848,962				4,869,052				16,249,335				13,263,895
Total net sales		$	20,686,197			$	20,969,726			$	61,710,410			$	59,193,317

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

		Three Months Ended																Nine Months Ended
		May 31, 2024				% of Product Sales*				May 31, 2023				% of Product Sales*				May 31, 2024				% of Product Sales*				May 31, 2023				% of Product Sales*
Direct cost of goods sold
ZERUST®			8,168,215				55.1	%		$	9,116,091				56.6	%		$	24,994,401				55.0	%		$	26,410,796				57.5	%
Natur-Tec®			3,768,921				64.4	%			3,576,676				73.5	%			10,566,223				65.0	%			10,078,385				76.0	%
Indirect cost of goods sold			855,967				—				697,106				—				2,583,254				—				2,468,091				—
Total net cost of goods sold		$	12,793,103							$	13,389,873							$	38,143,878							$	38,957,272

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

		Three Months Ended May 31,								Nine Months Ended May 31,
		2024				2023				2024				2023
Inside the U.S.A. to unaffiliated customers		$	7,086,859			$	7,729,820			$	21,160,095			$	21,958,978
Outside the U.S.A. to:
Joint ventures in which the Company is a shareholder directly and indirectly			441,067				732,437				1,904,444				2,895,665
Unaffiliated customers			13,158,272				12,507,469				38,645,871				34,338,674
		$	20,686,197			$	20,969,726			$	61,710,410			$	59,193,317

		Three Months Ended
		May 31, 2024				% of Total Fees for Services Provided to Joint Ventures				May 31, 2023				% of Total Fees for Services Provided to Joint Ventures
Poland		$	213,102				17.6	%		$	224,288				16.5	%
Germany			205,853				17.0	%			209,398				15.4	%
Japan			118,606				9.8	%			152,593				11.2	%
Sweden			110,542				9.1	%			144,981				10.7	%
Czech Republic			101,111				8.3	%			99,089				7.3	%
Finland			97,437				8.0	%			103,879				7.6	%
United Kingdom			96,872				8.0	%			83,586				6.1	%
Thailand			77,206				6.4	%			82,725				6.1	%
South Korea			58,732				4.8	%			61,668				4.5	%
France			47,206				3.9	%			128,149				9.4	%
Other			85,830				7.1	%			70,953				5.2	%
		$	1,212,497				100.0	%		$	1,361,311				100.0	%

		Nine Months Ended
		May 31, 2024				% of Total Fees for Services Provided to Joint Ventures				May 31, 2023				% of Total Fees for Services Provided to Joint Ventures
Poland		$	628,905				16.7	%		$	610,911				16.1	%
Germany			618,236				16.4	%			606,189				16.0	%
Japan			366,682				9.7	%			454,308				12.0	%
France			364,348				9.7	%			356,444				9.4	%
Sweden			324,062				8.6	%			358,032				9.4	%
Finland			296,929				7.9	%			285,931				7.5	%
Czech Republic			263,712				7.0	%			270,422				7.1	%
Thailand			246,908				6.6	%			257,282				6.8	%
United Kingdom			215,123				5.7	%			206,925				5.5	%
South Korea			197,070				5.2	%			190,866				5.0	%
Other			242,540				6.4	%			198,552				5.2	%
		$	3,764,514				100.0	%		$	3,795,862				100.0	%

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

		At May 31, 2024				At August 31, 2023
China		$	5,575,097			$	5,729,080
Other			1,061,309				745,469
United States			9,042,166				7,590,805
Total property and equipment, net		$	15,678,572			$	14,065,354

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

		Three Months Ended								Nine Months Ended
		May 31, 2024				May 31, 2023				May 31, 2024				May 31, 2023
China		$	3,540,570			$	3,318,373			$	10,674,939			$	9,936,808
Brazil			1,508,680				1,488,510				4,365,170				4,062,718
India			5,814,829				5,145,423				16,401,624				14,356,708
Other			2,735,259				3,287,600				9,108,583				8,878,105
United States			7,086,859				7,729,820				21,160,095				21,958,978
Total net sales		$	20,686,197			$	20,969,726			$	61,710,410			$	59,193,317

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