5. INVENTORIES (Tables)

3 Months Ended

Jul. 31, 2015

Inventory Disclosure [Abstract]

Schedule of inventories

	July 31, 2015		April 30, 2015
Raw materials	$	6,176,000	$	3,821,000
Work-in-process		4,281,000		3,533,000
Total inventories	$	10,457,000	$	7,354,000