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Note 11 - Segment and Geographic Information - Total Net Sales by Geographic Distribution (Details) - USD ($)	3 Months Ended		9 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2021	May 31, 2020
Net sales	$ 15,418,524	$ 9,744,823	$ 40,980,518	$ 37,610,006
CHINA
Net sales	4,037,493	3,089,135	13,025,127	9,975,091
BRAZIL
Net sales	1,237,586	365,222	2,756,008	2,080,418
INDIA
Net sales	1,540,734	631,551	4,036,208	4,727,325
Other Countries [Member]
Net sales	1,884,825	1,607,206	4,964,803	4,268,871
UNITED STATES
Net sales	$ 6,717,886	$ 4,051,709	$ 16,198,372	$ 16,558,301

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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