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Accounts Receivable (Tables)
9 Months Ended
Feb. 28, 2019
Receivables [Abstract]  
Schedule of accounts receivable

Accounts receivable, consisted of the following:

 

   February 28,
2019
  May 31,
2018
   (Unaudited)   
Accounts receivable  $44,049   $32,733 
Less: Allowance for bad debts   (5,528)   (2,742)
   $38,521   $29,991