Note 6 - Disaggregated Revenues and Segment Information (Tables)

9 Months Ended

Dec. 31, 2024

Notes Tables

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

	Three months Ended December 31,
	2024		2023
Net Revenue in the US
Chemical	$	213,449	$	175,402
Electronics		351,532		423,593
Engineering		115,727		57,472
		680,708		656,467
Net Revenue outside the US
Chemical		68,802		40,029
Electronics		-		-
Engineering		-		-
		68,802		40,029
Total Revenues	$	749,510	$	696,496

	Nine Months Ended December 31,
	2024		2023
Net Revenue in the US
Chemical	$	614,661	$	598,176
Electronics		1,109,107		1,082,634
Engineering		440,639		294,337
		2,164,407		1,975,147
Net Revenue outside the US
Chemical		282,984		238,170
Electronics		-		-
Engineering		-		-
		282,984		238,170
Total Revenues	$	2,447,391	$	2,213,317