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Note 11 - Segment and Geographic Information (Tables)

3 Months Ended

Nov. 30, 2023

Notes Tables

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

		Three Months Ended
		November 30, 2023				November 30, 2022
ZERUST® net sales		$	15,405,745			$	15,370,001
Natur-Tec® net sales			4,775,930				4,582,765
Total net sales		$	20,181,675			$	19,952,766

		Three Months Ended
		November 30, 2023				% of Total Fees for Services Provided to Joint Ventures				November 30, 2022				% of Total Fees for Services Provided to Joint Ventures
Germany		$	205,643				16.5	%		$	193,828				16.4	%
Poland			198,017				15.9	%			186,696				15.8	%
Japan			136,081				10.9	%			147,920				12.5	%
France			121,966				9.8	%			109,357				9.3	%
Sweden			110,536				8.9	%			100,436				8.5	%
Finland			103,744				8.3	%			90,432				7.7	%
Thailand			79,438				6.4	%			82,956				7.0	%
Czech Republic			77,812				6.2	%			80,332				6.8	%
South Korea			74,957				6.0	%			63,395				5.4	%
United Kingdom			63,149				5.1	%			57,691				4.9	%
Other			77,615				6.2	%			68,762				5.7	%
		$	1,248,958				100.0	%		$	1,181,805				100.0	%

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

		November 30, 2023				% of Product Sales*				November 30, 2022				% of Product Sales*
Direct cost of goods sold
ZERUST®		$	8,744,024				56.8	%		$	9,179,254				59.7	%
Natur-Tec®			3,228,583				67.6	%			3,570,673				77.9	%
Indirect cost of goods sold			874,794				NA				849,715				NA
Total net cost of goods sold ….		$	12,847,401							$	13,599,642

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

		Three Months Ended
		November 30, 2023				November 30, 2022
Inside the U.S.A. to unaffiliated customers		$	12,097,843			$	7,478,161
Outside the U.S.A. to:
Joint ventures in which the Company is a shareholder directly and indirectly			851,452				633,465
Unaffiliated customers			7,232,380				11,841,140
		$	20,181,675			$	19,952,766

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

		At November 30, 2023				At August 31, 2023
China		$	5,801,146			$	5,729,080
Other			817,898				745,469
United States			7,637,946				7,590,805
Total property and equipment, net		$	14,256,990			$	14,065,354

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

		Three Months Ended
		November 30, 2023				November 30, 2022
China		$	3,678,523			$	3,746,640
Brazil			1,529,623				1,367,418
India			5,180,391				4,846,927
Other			2,560,757				2,513,620
United States			7,232,381				7,478,161
Total net sales		$	20,181,675			$	19,952,766

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