INVENTORIES

9 Months Ended

Feb. 28, 2022

INVENTORIES

INVENTORIES

7. INVENTORIES

Inventories are comprised of the following (in thousands):

	February 28,		May 31,
	2022		2021
Raw materials and sub-assemblies	$	9,286	$	5,859
Work in process		4,866		2,988
Finished goods		-		2
	$	14,152	$	8,849

For the three and nine months ended February 28, 2022, the Company wrote down $1,026,000 and $1,046,000 of inventory, respectively. For the three and nine months ended February 28, 2021, the Company wrote down $104,000 and $117,000 of inventory, respectively.