Note 6 - Disaggregated Revenues and Segment Information (Tables)

3 Months Ended

Jun. 30, 2023

Notes Tables

Revenue from External Customers by Geographic Areas [Table Text Block]

	Three Months Ended June 30,
	2023		2022
Net Revenue in the US
Chemical	$	218,971	$	246,900
Electronics		266,163		464,692
Engineering		158,521		84,541
		643,655		796,133
Net Revenue outside the US
Chemical		119,034		125,275
Electronics		-		-
Engineering		-		-
		119,034		125,275
Total Revenues	$	762,689	$	921,408

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

	Chemical			Electronics			Engineering		Total
Three months ended June 30, 2023
Revenue from external customers	$	338,005		$	266,163		$	158,521	$	762,689
Segment operating income	$	(79,788	)	$	(73,708	)	$	15,700	$	(137,796	)
Three months ended June 30, 2022
Revenue from external customers	$	372,175		$	464,692		$	84,541	$	921,408
Segment operating income	$	11,393		$	(66,655	)	$	20,637	$	(34,625	)
Total assets at June 30, 2023	$	1,324,733		$	1,053,765		$	632,258	$	3,010,756
Total assets at March 31, 2023	$	1,050,541		$	1,575,811		$	463,473	$	3,089,825