CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) - USD ($)	3 Months Ended
	Aug. 31, 2022	Aug. 31, 2021
Income Statement [Abstract]
Net sales	$ 1,637,435	$ 1,261,787
Cost of sales	(1,692,390)	(1,350,757)
Gross loss	(54,955)	(88,970)
Operating expenses:
Selling, general and administrative	1,653,821	1,069,855
Research and development	361,171	381,544
Total operating expenses	2,014,992	1,451,399
Loss from operations	(2,069,947)	(1,540,369)
Other income:
Dividend and interest income	28	6,805
Interest expense
Total other income	28	6,805
Loss before income taxes	(2,069,919)	(1,533,564)
Provision for income taxes	(1,957)	(9,017)
Net loss	$ (2,071,876)	$ (1,542,581)
Basic net loss per common share (in Dollars per share)	$ (0.16)	$ (0.12)
Diluted net loss per common share (in Dollars per share)	$ (0.16)	$ (0.12)
Weighted average number of common and common equivalent shares:
Basic (in Shares)	13,100,407	12,426,784
Diluted (in Shares)	13,100,407	12,426,784
Net loss	$ (2,071,876)	$ (1,542,581)
Other comprehensive loss, net of tax:
Foreign currency translation	(12,527)	(5,613)
Comprehensive loss	$ (2,084,403)	$ (1,548,194)