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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

May 31, 2016

Accounting Policies [Abstract]

Schedule of Inventory, Current [Table Text Block]

	2016			2015
Raw materials	$	942,000		$	958,000
Work in progress		690,000			831,000
Finished products		231,000			238,000
Total	$	1,863,000		$	2,027,000

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2016			2015
Dividend yield		0%			0%
Expected volatility		51.77-55.29%			49.53 -62.68%
Risk free interest rate		1.55-1.75%			1.26 -1.67%
Expected life		3.75-6.25 years			3.75-6.0   years

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

For the Years Ended May 31	2016			2015
Numerator for basic and diluted net loss per common share	$	(1,499,787)		$	(331,410)
Denominator for basic net loss per common share		7,626,078			7,552,262
Effect of dilutive securities:
Options		--			--
Denominator for diluted net loss per common share		7,626,078			7,552,262
Basic net loss per common share	$	(0.20)		$	(0.04)
Diluted net loss per common share	$	(0.20)		$	(0.04)

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