CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) - USD ($)	3 Months Ended
	Aug. 31, 2016	Aug. 31, 2015
Net sales	$ 1,410,110	$ 1,286,993
Cost of sales	(833,148)	(865,572)
Gross profit	576,962	421,421
Operating Expenses:
Selling, general and administrative	418,348	339,660
Research and development	224,246	157,994
Total operating expenses	642,594	497,654
Loss from operations	(65,632)	(76,233)
Other Income (Expense):
Dividend and interest income	10,215	3,934
Interest expense		(36)
Total other income	10,215	3,898
Loss before income tax	(55,417)	(72,335)
Provision for income taxes
Net loss	$ (55,417)	$ (72,335)
Basic net loss per common share (in Dollars per share)	$ (0.01)	$ (0.01)
Diluted net loss per common share (in Dollars per share)	$ (0.01)	$ (0.01)
Weighted average number of common and common equivalent shares:
Basic (in Shares)	8,169,673	7,582,056
Diluted (in Shares)	8,169,673	7,582,056
Net loss	$ (55,417)	$ (72,335)
Other comprehensive gain (loss), net of tax:
Foreign currency translation	26	(343)
Comprehensive loss	$ (55,391)	$ (72,678)