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ORGANIZATION AND DESCRIPTION OF BUSINESS - INITIAL PUBLIC OFFERING (Details) - USD ($)
12 Months Ended
Apr. 29, 2019
Nov. 02, 2018
Aug. 21, 2018
Jan. 05, 2015
Jul. 31, 2019
Subsidiary, Sale of Stock [Line Items]          
Number of shares issued   49,950,000 50,000 50,000,000  
Net proceeds from initial public offering         $ 8,772,754
IPO          
Subsidiary, Sale of Stock [Line Items]          
Number of shares issued 2,074,672        
Public offering price $ 5.00        
Gross proceeds $ 10,400,000        
Net proceeds from initial public offering $ 8,800,000