4. Inventories (Tables)

9 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Inventories

	March 31, 2018		June 30, 2017
Raw materials	$	1,525,400	$	1,373,800
Work-in-process		831,000		166,500
Finished goods		345,200		420,900
	$	2,701,600	$	1,961,200