Note 7 - Disaggregated Revenues and Segment Information (Tables)

3 Months Ended

Jun. 30, 2021

Notes Tables

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

	Three Months Ended June 30,
	2021		2020
Net Revenue in the US
Chemical	$	233,304	$	161,857
Electronics		222,574		288,062
Engineering		183,527		94,508
		639,405		544,427
Net Revenue outside the US
Chemical		81,953		24,666
Electronics		-		-
Engineering		-		-
		81,953		24,666
Total Revenues	$	721,358	$	569,093

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

	Chemical			Electronics			Engineering			Total
Three months ended June 30, 2021
Revenue from external customers	$	315,257		$	222,574		$	183,527		$	721,358
Segment operating income (loss)	$	(11,107	)	$	(93,473	)	$	61,583		$	(42,997	)
Three months ended June 30, 2020
Revenue from external customers	$	186,523		$	288,062		$	94,508		$	569,093
Segment operating (loss)	$	(45,152	)	$	(114,805	)	$	(23,913	)	$	(183,870	)
Total assets at June 30, 2021	$	2,217,811		$	1,565,792		$	1,291,099		$	5,074,702
Total assets at March 31, 2021	$	2,033,499		$	2,294,203		$	886,397		$	5,214,099