Note 9 - Segment Information

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

NOTE 

9

 - SEGMENT INFORMATION

Information about segments is as follows: 

	Chemical		Electronics			Engineering		Total
Year ended March 31, 2018
Revenues	$	1,391,522	$	1,056,384		$	1,306,306	$	3,754,212
Segment operating income (loss)	$	34,611	$	(303,388	)	$	202,589	$	(66,188	)
Year ended March 31, 2017
Revenues	$	1,285,353	$	1,820,490		$	2,165,388	$	5,271,231
Segment operating income	$	216,371	$	361,484		$	560,706	$	1,138,561
Total assets at March 31, 2018	$	1,687,276	$	1,280,908		$	1,583,950	$	4,552,134
Total assets at March 31, 2017	$	1,110,111	$	1,553,484		$	1,857,054	$	4,520,649