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Note 11 - Segment and Geographic Information (Tables)

6 Months Ended

Feb. 28, 2023

Notes Tables

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

		Three Months Ended February 28,								Six Months Ended February 28,
		2023				2022				2023				2022
ZERUST® net sales		$	14,458,747			$	13,117,777			$	29,828,748			$	27,541,562
Natur-Tec® net sales			3,812,078				3,630,862				8,394,843				7,400,490
Total net sales		$	18,270,825			$	16,748,639			$	38,223,591			$	34,942,052

		Three Months Ended February 28,
		2023				% of Total Fees for Services Provided to Joint Ventures				2022				% of Total Fees for Services Provided to Joint Ventures
Germany		$	202,964				16.2	%		$	216,992				17.4	%
Poland			199,927				16.0	%			172,700				13.9	%
Japan			153,795				12.3	%			151,933				12.2	%
France			118,938				9.5	%			115,663				9.3	%
Sweden			112,615				9.0	%			99,178				8.0	%
Finland			91,620				7.3	%			85,426				6.9	%
Thailand			91,601				7.3	%			87,918				7.1	%
Czech Republic			91,001				7.3	%			69,386				5.6	%
South Korea			65,803				5.3	%			64,173				5.1	%
United Kingdom			65,648				5.2	%			86,736				7.0	%
Other			58,834				4.6	%			96,803				7.5	%
		$	1,252,746				100.0	%		$	1,246,908				100.0	%

		Six Months Ended February 28,
		2023				% of Total Fees for Services Provided to Joint Ventures				2022				% of Total Fees for Services Provided to Joint Ventures
Germany		$	396,792				16.3	%		$	435,422				17.4	%
Poland			386,623				15.9	%			349,626				14.0	%
Japan			301,715				12.4	%			318,740				12.7	%
France			228,295				9.4	%			231,958				9.3	%
Sweden			213,051				8.8	%			207,248				8.3	%
Finland			182,052				7.5	%			165,599				6.6	%
Thailand			174,557				7.2	%			175,472				7.0	%
Czech Republic			171,333				7.0	%			139,483				5.6	%
South Korea			129,197				5.3	%			126,800				5.1	%
United Kingdom			123,339				5.1	%			181,663				7.2	%
Other			127,597				5.1	%			173,756				6.8	%
		$	2,434,551				100.0	%		$	2,505,767				100.0	%

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

		Three Months Ended February 28,																Six Months Ended February 28,
		2023				% of Product Sales*				2022				% of Product Sales*				2023				% of Product Sales*				2022				% of Product Sales*
Direct cost of goods sold
ZERUST®		$	8,115,451				56.1	%		$	8,151,274				62.1	%		$	17,294,705				58.0	%		$	16,857,941				61.2	%
Natur-Tec®			2,931,036				76.9	%			2,775,436				76.4	%			6,501,709				77.4	%			5,697,533				77.0	%
Indirect cost of goods sold			821,152				—				837,594				—				1,670,867				—				1,699,313				—
Total net cost of goods sold		$	11,867,639							$	11,764,304							$	25,467,281							$	24,254,787

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

		Three Months Ended February 28,								Six Months Ended February 28,
		2023				2022				2023				2022
Inside the U.S.A. to unaffiliated customers		$	6,750,997			$	5,115,963			$	14,229,158			$	11,272,285
Outside the U.S.A. to:
Joint ventures in which the Company is a shareholder directly and indirectly			1,529,763				883,513				2,163,228				1,723,952
Unaffiliated customers			9,990,065				10,749,163				21,831,205				21,945,815
		$	18,270,825			$	16,748,639			$	38,223,591			$	34,942,052

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

		At February 28, 2023				At August 31, 2021
China		$	5,885,664			$	5,826,898
Other			668,910				565,022
United States			6,891,392				5,778,573
Total property and equipment, net		$	13,445,966			$	12,170,493

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

		Three Months Ended February 28,
		2023				2022
China		$	2,871,795			$	4,163,741
Brazil			1,206,790				936,089
India			4,364,358				4,068,781
Other			3,076,885				2,464,066
United States			6,750,997				5,115,962
Total net sales		$	18,270,825			$	16,748,639

		Six Months Ended February 28,
		2023				2022
China		$	6,618,435			$	8,221,593
Brazil			2,574,208				2,232,306
India			9,211,285				8,545,765
Other			5,590,505				4,670,103
United States			14,229,158				11,272,285
Total net sales		$	38,223,591			$	34,942,052

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