CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) - USD ($)	3 Months Ended
	Aug. 31, 2020	Aug. 31, 2019
Income Statement [Abstract]
Net sales	$ 1,143,806	$ 1,194,415
Cost of sales	(960,930)	(827,111)
Gross Profit	182,876	367,304
Operating Expenses:
Selling, general and administrative	1,164,564	506,397
Research and development	674,693	370,466
Total operating expense	1,839,257	876,863
Loss from operations	(1,656,381)	(509,559)
Other Income:
Dividend and interest income	8,091	4,063
Total other income	8,091	4,063
Loss before income taxes	(1,648,290)	(505,496)
Provision for income taxes	1,125	800
Net loss	$ (1,649,415)	$ (506,296)
Basic net loss per common share (in Dollars per share)	$ (0.14)	$ (0.05)
Diluted net loss per common share (in Dollars per share)	$ (0.14)	$ (0.05)
Weighted average number of common and common equivalent shares:
Basic (in Shares)	11,748,377	9,744,461
Diluted (in Shares)	11,748,377	9,744,461
Net loss	$ (1,649,415)	$ (506,296)
Other comprehensive loss, net of tax:
Foreign currency translation	(1,721)	(3,442)
Comprehensive loss	$ (1,651,136)	$ (509,738)