3. Inventory: Schedule of Inventory (Details) - USD ($)	May 31, 2024	May 31, 2023
Inventory, Gross	$ 7,571,052	$ 6,009,304
Less allowance for obsolescence	59,000	68,000
Inventory, Net	7,512,052	5,941,304
Raw Materials
Inventory, Gross	886,947	673,453
Work-in-process
Inventory, Gross	6,412,497	5,005,416
Finished goods
Inventory, Gross	$ 271,608	$ 330,435

Amount of inventory reserves for last-in first-out (LIFO) and other inventory valuation methods.

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