CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) - USD ($)	3 Months Ended		9 Months Ended
	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2023	Feb. 28, 2022
Income Statement [Abstract]
Net sales	$ 1,111,442	$ 7,660,501	$ 4,230,792	$ 13,569,188
Cost of sales	(991,169)	(5,987,277)	(3,813,599)	(11,213,175)
Gross profit	120,273	1,673,224	417,193	2,356,013
Operating expenses:
Selling, general and administrative	1,379,412	1,393,619	4,589,255	3,817,061
Research and development	392,031	387,104	1,215,143	1,316,581
Total operating expenses	1,771,443	1,780,723	5,804,398	5,133,642
Loss from operations	(1,651,170)	(107,499)	(5,387,205)	(2,777,629)
Other income:
Dividend and interest income	36,086	6,019	77,368	19,740
Loss before income taxes	(1,615,084)	(101,480)	(5,309,837)	(2,757,889)
Provision for income taxes	(34,775)	(2,688)	(37,986)	(14,134)
Net loss	$ (1,649,859)	$ (104,168)	$ (5,347,823)	$ (2,772,023)
Basic net loss per common share (in Dollars per share)	$ (0.12)	$ (0.01)	$ (0.4)	$ (0.22)
Diluted net loss per common share (in Dollars per share)	$ (0.12)	$ (0.01)	$ (0.4)	$ (0.22)
Weighted average number of common and common equivalent shares:
Basic (in Shares)	13,481,490	12,820,481	13,340,958	12,611,760
Diluted (in Shares)	13,481,490	12,820,481	13,340,958	12,611,760
Net loss	$ (1,649,859)	$ (104,168)	$ (5,347,823)	$ (2,772,023)
Other comprehensive loss, net of tax:
Foreign currency translation	(15,498)	(2,538)	(36,975)	(12,901)
Comprehensive loss	$ (1,665,357)	$ (106,706)	$ (5,384,798)	$ (2,784,924)