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Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
Jul. 31, 2016
Apr. 30, 2016
Assets    
Allowance for doubtful accounts, current accounts receivables $ 449,946 $ 449,946
Allowance for doubtful accounts, noncurrent accounts receivables $ 625,963 $ 625,963
Stockholders' Equity:    
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 250,000,000 250,000,000
Common stock, shares issued 138,158,145 135,158,145
Common stock, shares outstanding 137,958,145 134,958,145
Treasury stock, shares 200,000 200,000