Note 3 - Inventory (Tables)

9 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	December 31, 2019			March 31, 2019
Raw materials	$	299,740		$	440,414
Work in progress		1,495,301			676,341
Finished goods		257,995			579,604
Allowance to reduce inventory to NRV		(492,988	)		(162,567	)
Total inventory	$	1,560,048		$	1,533,792