Note 9 - Segment Information - Summary of Segment Information (Details) - USD ($)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Chemical [Member]
Revenues	$ 1,107,946	$ 1,099,977
Segment operating income (loss)	126,907	1,469
Total assets	509,738	506,439
Electronics [Member]
Revenues	839,306	457,829
Segment operating income (loss)	(53,127)	(194,249)
Total assets	389,011	207,557
Engineering [Member]
Revenues	933,296	251,817
Segment operating income (loss)	176,169	(31,012)
Total assets	442,868	116,232
Revenues	2,850,548	1,809,623
Segment operating income (loss)	249,949	(223,792)
Total assets	$ 1,341,417	$ 830,228