Consolidated Statements of Cash Flows (Unaudited) - USD ($)	12 Months Ended
	May 31, 2025	May 31, 2024
Cash Flows from Operating Activities:
Net income	$ 2,351,010	$ 5,027,491
Adjustments to reconcile net income to net cash provided by operating activities -
Gain on involuntary conversion (see Note 4)	(741,821)	(593,647)
(Gain) loss on disposition of assets	43,027	(43,601)
Depreciation and amortization	5,772,850	5,736,342
Change in deferred taxes	947,391	939,679
Increase in trade accounts receivable	540,387	1,037,142
Increase in other accounts receivable	(2,107,108)	(0)
Decrease in related parties receivable	(625,313)	(209,020)
Increase (Decrease) in inventory	387,588	(690,273)
Operating lease expense	26,464	25,473
Increase (Decrease) in prepaid expenses	28,511	(56,460)
Increase in accounts payable and accrued expenses	354,282	316,706
Increase (Decrease) in deferred revenue	(817,981)	817,938
Net cash provided by operating activities	10,287,449	12,394,972
Cash Flows from Investing Activities:
Purchase of property, plant and equipment	(5,753,429)	(2,801,378)
Proceeds from sale of property, plant and equipment	50,000	0
Net cash used in investing activities	(5,703,429)	(2,801,378)
Cash Flows from Financing Activities:
Principal payments on long-term debt and financing leases	(2,383,786)	(2,256,179)
Principal payments on revolving loan	0	(1,500,000)
Payments for retirement of preferred stock	(5,000,000)	0
Repurchase of common stock	(606,737)	0
Repurchase and retirement of common stock	(420,000)	0
Payments for debt issue costs	0	(13,085)
Dividends paid on preferred stock	(427,103)	(721,640)
Net cash used in financing activities	(8,837,626)	(4,490,904)
Net Increase (Decrease) in Cash	(4,253,606)	5,102,690
Cash, beginning of period	5,798,641	695,951
Cash, end of period	$ 1,545,035	$ 5,798,641