Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2024	Aug. 31, 2023	Aug. 31, 2024	Aug. 31, 2023
Sales	$ 5,875,700	$ 8,117,422	$ 18,329,363	$ 23,428,681
Cost of goods sold	4,175,575	5,816,798	13,248,961	16,757,586
Gross profit	1,700,125	2,300,624	5,080,402	6,671,095
Expenses
Engineering	78,949	170,595	346,373	439,387
Selling	380,797	566,327	1,241,187	1,608,752
General and administrative	1,086,685	1,095,479	3,550,460	3,178,285
Total expenses	1,546,431	1,832,401	5,138,020	5,226,424
Income (loss) from operations	153,694	468,223	(57,618)	1,444,671
Other income (expense):
Interest expense	(150,012)	(160,792)	(471,784)	(419,802)
Other	(4,165)	(2,528)	(13,386)	141,079
Total other expense	(154,177)	(163,320)	(485,170)	(278,723)
Income (loss) from continuing operations before income taxes	(483)	304,903	(542,788)	1,165,948
Income tax expense (benefit)	(2,713)	64,030	(116,131)	245,019
Net income (loss) from continuing operations	2,230	240,873	(426,657)	920,929
Discontinued Operations (Note 3)
(Loss) from discontinued operations before income taxes	(35,919)	(398,611)	(123,849)	(438,081)
Income tax (benefit)	(7,489)	(83,708)	(25,954)	(91,997)
Net income (loss) on discontinued operations	(28,430)	(314,903)	(97,895)	(346,084)
Net loss	$ (26,200)	$ (74,030)	$ (524,552)	$ 574,845