Note 6 - Inventories

9 Months Ended

Dec. 31, 2019

Notes to Financial Statements

Inventory Disclosure [Text Block]

NOTE

6.

INVENTORIES

     Inventories are shown in the following table:

	December 31, 2019		March 31, 2019
Raw materials	$	1,139,246	$	1,130,917
Work in process		1,906,679		2,325,238
Finished goods		1,113,817		808,721
Total inventories	$	4,159,742	$	4,264,876