Note 6 - Inventories (Tables)

6 Months Ended

Sep. 30, 2015

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	September 30, 2015		March 31, 2015
Raw materials	$	813,644	$	738,169
Work in process		1,692,008		2,302,751
Finished goods		642,216		701,572
Total inventories	$	3,147,868	$	3,742,492