4. Condensed Consolidated Balance Sheets (June 2018 Note) (Tables)

3 Months Ended

12 Months Ended

Jun. 30, 2018

Mar. 31, 2018

Inventory Disclosure [Abstract]

Schedule of inventories

	June 30,		March 31,
	2018		2018
Raw materials	$	1,466,000	$	1,619,000
Finished goods		1,134,000		1,246,000
	$	2,600,000	$	2,865,000

	March 31,
	2018		2017
Raw materials	$	1,619,000	$	1,480,000
Finished goods		1,246,000		741,000
	$	2,865,000	$	2,221,000