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7. SEGMENT INFORMATION (Details Narrative)
3 Months Ended 9 Months Ended
Feb. 28, 2017
Feb. 29, 2016
Feb. 28, 2017
Feb. 29, 2016
Sales to the Company's five largest customers percentage of net sales 98.00% 93.00% 95.00% 94.00%
Customer A        
Customers accounted for 10% or more of total revenues 91.00% 45.00% 59.00% 48.00%
Customer B        
Customers accounted for 10% or more of total revenues   37.00% 15.00% 29.00%
Customer C        
Customers accounted for 10% or more of total revenues     13.00%