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Note 11 - Segment and Geographic Information (Tables)

12 Months Ended

Aug. 31, 2023

Notes Tables

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

		Fiscal 2023				Fiscal 2022
ZERUST® net sales		$	61,728,364			$	57,459,382
Natur-Tec® net sales			18,174,588				16,699,508
Total net sales		$	79,902,952			$	74,158,890

		Fiscal 2023				% of Total Fees for Services Provided to Joint Ventures				Fiscal 2022				% of Total Fees for Services Provided to Joint Ventures
Germany		$	816,089				15.7	%		$	834,725				14.5	%
Poland			810,977				15.6	%			730,523				12.7	%
Japan			658,934				12.7	%			669,371				11.6	%
Sweden			498,463				9.6	%			447,441				7.8	%
France			479,515				9.2	%			448,579				7.8	%
Finland			388,627				7.5	%			340,783				5.9	%
Czech Republic			365,018				7.0	%			300,257				5.2	%
Thailand			340,657				6.6	%			344,649				6.0	%
United Kingdom			283,418				5.5	%			342,488				5.9	%
South Korea			266,562				5.1	%			270,309				4.7	%
Indonesia			130,081				2.5	%			156,476				2.7	%
Other			150,844				3.0	%			882,081				15.2	%
		$	5,189,185				100.0	%		$	5,767,682				100.0	%

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

		Fiscal 2023				Fiscal 2022
Direct cost of goods sold
ZERUST®		$	35,297,352			$	34,673,146
Natur-Tec®			13,645,992				12,859,343
Indirect cost of goods sold			3,155,777				3,557,809
Total net cost of goods sold		$	52,099,121			$	51,090,298

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

		Fiscal Year Ended August 31,
		2023				2022
Inside the U.S.A. to unaffiliated customers		$	28,554,354			$	25,301,067
Outside the U.S.A. to:
Joint ventures in which the Company is a shareholder directly and indirectly			3,401,910				2,968,089
Unaffiliated customers			47,946,688				45,889,734
		$	79,902,952			$	74,158,890

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

		At August 31, 2023				At August 31, 2022
China		$	5,729,080			$	5,826,898
Other			745,469				565,022
United States			7,590,805				5,778,573
Total property and equipment		$	14,065,354			$	12,170,493

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

		Fiscal Year Ended August 31, 2023				Fiscal Year Ended August 31, 2022
China		$	13,469,075			$	15,754,051
Brazil			5,969,314				5,160,572
India			19,916,834				18,555,603
Other			11,993,375				9,387,597
United States			28,554,354				25,301,067
Total net sales		$	79,902,952			$	74,158,890

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