Note 6 - Inventories

3 Months Ended

Jun. 30, 2019

Notes to Financial Statements

Inventory Disclosure [Text Block]

NOTE

6.

INVENTORIES

Inventories are shown in the following table:

	June 30, 2019		March 31, 2019
Raw materials	$	1,082,203	$	1,130,917
Work in process		2,250,251		2,325,238
Finished goods		887,329		808,721
Total inventories	$	4,219,783	$	4,264,876