Note 9 - Segment Information (Tables)

12 Months Ended

Mar. 31, 2015

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Chemical		Electronics			Engineering			Total
Year ended March 31, 2015
Revenue from external customers	$	1,107,946	$	839,306		$	933,296		$	2,850,848
Segment operating income (loss)	$	126,907	$	(53,127	)	$	176,169		$	249,949
Year ended March 31, 2014
Revenue from external customers	$	1,099,977	$	457,829		$	251,817		$	1,809,623
Segment operating income (loss)	$	1,469	$	(194,249	)	$	(31,012	)	$	(223,792	)
Total assets at March 31, 2015	$	509,738	$	389,011		$	442,868		$	1,341,417
Total assets at March 31, 2014	$	506,439	$	207,557		$	116,232		$	830,228