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Note 12 - Segment and Geographic Information (Tables)

6 Months Ended

Feb. 28, 2025

Notes Tables

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

		Three Months Ended								Six Months Ended
		February 28, 2025				February 29, 2024				February 28, 2025				February 29, 2024
ZERUST® net sales		$	14,112,017			$	15,218,095			$	29,587,820			$	30,623,840
Natur-Tec® net sales			4,960,049				5,624,443				10,822,639				10,400,373
Total net sales		$	19,072,066			$	20,842,538			$	40,410,459			$	41,024,213

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

		Three Months Ended																Six Months Ended
		February 28, 2025				% of Product Sales*				February 29, 2024				% of Product Sales*				February 28, 2025				% of Product Sales*				February 29, 2024				% of Product Sales*
Direct cost of goods sold
ZERUST®		$	8,096,177				57.4	%		$	8,082,163				53.1	%		$	16,774,883				56.7	%		$	16,826,187				54.9	%
Natur-Tec®			3,237,854				65.3	%			3,568,719				63.5	%			6,927,037				64.0	%			6,797,302				65.4	%
Indirect cost of goods sold			942,451				—				852,492				—				1,750,002				—				1,727,286				—
Total net cost of goods sold		$	12,276,482							$	12,503,374							$	25,451,922							$	25,350,775

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

		Three Months Ended								Six Months Ended
		February 28, 2025				February 29, 2024				February 28, 2025				February 29, 2024
Inside the U.S. to unaffiliated customers		$	6,668,183			$	6,840,855			$	14,150,801			$	14,073,236
Outside the U.S. to:
Joint ventures in which the Company is a shareholder directly and indirectly			545,484				611,926				1,172,245				1,463,377
Unaffiliated customers			11,858,399				13,389,757				25,087,413				25,487,600
		$	19,072,066			$	20,842,538			$	40,410,459			$	41,024,213

		Three Months Ended
		February 28, 2025				% of Total Fees for Services Provided to Joint Ventures				February 29, 2024				% of Total Fees for Services Provided to Joint Ventures
Germany		$	201,728				18.8	%		$	206,740				15.9	%
Poland			185,499				17.3	%			217,786				16.7	%
Japan			122,548				11.5	%			111,995				8.6	%
Sweden			96,133				9.0	%			102,984				7.9	%
Thailand			86,721				8.1	%			90,264				6.9	%
France			70,040				6.5	%			195,176				15.0	%
Finland			69,923				6.5	%			95,748				7.3	%
United Kingdom			68,804				6.4	%			55,101				4.2	%
Czech Republic			61,340				5.7	%			84,789				6.5	%
South Korea			27,320				2.6	%			63,381				4.9	%
Other			80,207				7.6	%			79,095				6.1	%
		$	1,070,263				100.0	%		$	1,303,059				100.0	%

		Six Months Ended
		February 28, 2025				% of Total Fees for Services Provided to Joint Ventures				February 29, 2024				% of Total Fees for Services Provided to Joint Ventures
Germany		$	408,056				17.3	%		$	412,383				16.2	%
Poland			405,510				17.2	%			415,803				16.3	%
Japan			271,086				11.5	%			248,076				9.7	%
Finland			201,382				8.6	%			199,492				7.8	%
United Kingdom			185,029				7.9	%			118,251				4.6	%
Thailand			180,886				7.7	%			169,702				6.6	%
Sweden			163,061				6.9	%			213,520				8.4	%
France			149,104				6.3	%			317,142				12.4	%
Czech Republic			133,972				5.7	%			162,601				6.4	%
South Korea			95,021				4.0	%			138,338				5.4	%
Other			161,275				6.9	%			156,710				6.1	%
		$	2,354,382				100.0	%		$	2,552,018				100.0	%

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

		At February 28, 2025				At August 31, 2024
China		$	5,359,435			$	5,627,202
Other			1,179,459				1,217,400
United States			8,275,495				9,421,051
Total property and equipment, net		$	14,814,389			$	16,265,653

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

		Three Months Ended
		February 28, 2025				February 29,  2024
China		$	3,735,100			$	3,455,846
Brazil			1,515,680				1,326,867
India			4,870,068				5,406,404
Other			2,283,035				3,812,566
United States			6,668,183				6,840,855
Total net sales		$	19,072,066			$	20,842,538

		Six Months Ended
		February 28, 2025				February 29,  2024
China		$	7,729,869			$	7,134,369
Brazil			2,900,874				2,856,490
India			10,915,803				10,586,795
Other			4,713,112				6,373,323
United States			14,150,801				14,073,236
Total net sales		$	40,410,459			$	41,024,213

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