Note 6 - Inventories

6 Months Ended

Sep. 30, 2019

Notes to Financial Statements

Inventory Disclosure [Text Block]

NOTE

6.

INVENTORIES

Inventories are shown in the following table:

	September 30, 2019		March 31, 2019
Raw materials	$	1,127,683	$	1,130,917
Work in process		2,282,261		2,325,238
Finished goods		945,388		808,721
Total inventories	$	4,355,332	$	4,264,876