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Commitments (Details)
1 Months Ended 3 Months Ended
Jan. 27, 2017
USD ($)
$ / shares
shares
May 31, 2017
USD ($)
ft²
May 31, 2016
USD ($)
Commitments (Textual)      
Area of facility (in square feet) | ft²   20,000  
Rent expense   $ 10,000  
Payments for joint venture agreement $ 250,000 $ 250,000
Joint venture (JV) agreement [Member]      
Commitments (Textual)      
Joint venture cost method interest rate, percentage 49.00%    
Chinese company [Member]      
Commitments (Textual)      
Payments for joint venture agreement $ 9,750,000    
Sale of equity method investments interest $ 2,000,000    
Shares issue of price per share | $ / shares $ 0.20    
Ownership percentage in joint venture 51.00%    
Sale of common stock | shares 10,000,000    
Common stock purchase minimum amount $ 1,250,000