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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	May 31, 2018	May 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (1,465,828)	$ (908,561)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	186,601	219,219
Change in provision for allowance for doubtful accounts	7,566	41,724
Inventory reserve	7,613	(16,505)
Stock option expense	18,473	21,727
Decrease in deferred rent liability	15,787	8,070
Decrease in deferred tax asset	31,000
Changes in assets and liabilities:
Accounts receivable	252,505	(132,261)
Inventories	(457,269)	150,475
Prepaid expenses and other	(104,652)	(82,179)
Other assets	(18,168)	(39,336)
Accounts payable and accrued expenses	319,169	10,445
Accrued compensation	32,986	4,324
Net cash used in operating activities	(1,174,217)	(722,858)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property and equipment	(130,347)	(96,085)
Net cash used in investing activities	(130,347)	(96,085)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from sale of common stock, net	1,266,871
Proceeds from exercise of stock options	27,436	157,728
Net cash provided by financing activities	1,294,307	157,728
Effect of exchange rate changes on cash	(10,302)	(2,248)
Net decrease in cash and cash equivalents	(20,559)	(663,463)
CASH AND CASH EQUIVALENTS, beginning of year	1,225,462	1,888,925
CASH AND CASH EQUIVALENTS, end of year	1,204,903	1,225,462
Non-cash investing and financing activities:
Subscriptions receivable	9,062
Cash paid during the year for:
Interest	37	282
Income taxes	$ 800	$ 800

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-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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