GEOGRAPHIC INFORMATION (Details) - Geographic information regarding net sales - USD ($)	12 Months Ended
	May 31, 2022	May 31, 2021
GEOGRAPHIC INFORMATION (Details) - Geographic information regarding net sales [Line Items]
Net Sales	$ 18,871,409	$ 7,199,027
Revenue, Segment Benchmark [Member] | Geographic Concentration Risk [Member]
GEOGRAPHIC INFORMATION (Details) - Geographic information regarding net sales [Line Items]
Net Sales Percent	100.00%	100.00%
Asia [Member]
GEOGRAPHIC INFORMATION (Details) - Geographic information regarding net sales [Line Items]
Net Sales	$ 13,375,000	$ 1,908,000
Asia [Member] | Revenue, Segment Benchmark [Member] | Geographic Concentration Risk [Member]
GEOGRAPHIC INFORMATION (Details) - Geographic information regarding net sales [Line Items]
Net Sales Percent	71.00%	26.00%
Europe [Member]
GEOGRAPHIC INFORMATION (Details) - Geographic information regarding net sales [Line Items]
Net Sales	$ 4,339,000	$ 4,301,000
Europe [Member] | Revenue, Segment Benchmark [Member] | Geographic Concentration Risk [Member]
GEOGRAPHIC INFORMATION (Details) - Geographic information regarding net sales [Line Items]
Net Sales Percent	23.00%	60.00%
North America [Member]
GEOGRAPHIC INFORMATION (Details) - Geographic information regarding net sales [Line Items]
Net Sales	$ 997,000	$ 548,000
North America [Member] | Revenue, Segment Benchmark [Member] | Geographic Concentration Risk [Member]
GEOGRAPHIC INFORMATION (Details) - Geographic information regarding net sales [Line Items]
Net Sales Percent	5.00%	8.00%
South America [Member]
GEOGRAPHIC INFORMATION (Details) - Geographic information regarding net sales [Line Items]
Net Sales	$ 90,000	$ 250,000
South America [Member] | Revenue, Segment Benchmark [Member] | Geographic Concentration Risk [Member]
GEOGRAPHIC INFORMATION (Details) - Geographic information regarding net sales [Line Items]
Net Sales Percent	1.00%	3.00%
Middle East [Member]
GEOGRAPHIC INFORMATION (Details) - Geographic information regarding net sales [Line Items]
Net Sales	$ 70,000	$ 192,000
Middle East [Member] | Revenue, Segment Benchmark [Member] | Geographic Concentration Risk [Member]
GEOGRAPHIC INFORMATION (Details) - Geographic information regarding net sales [Line Items]
Net Sales Percent	0.00%	3.00%