Note 4 - Inventories - Components of Inventories (Details) - USD ($)	Jul. 31, 2021	Oct. 31, 2020
Finished goods	$ 4,420,160	$ 4,663,978
Work in process	3,795,368	4,165,289
Raw materials	7,282,036	8,010,794
Production supplies	237,892	259,706
Total	$ 15,735,456	$ 17,099,767

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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