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Note 10 - Prepaid Expenses and Other Current Assets (Details) (USD $)
Jan. 31, 2014
Apr. 30, 2013
Details    
Prepaid expenses and other current assets $ 1,300,365 $ 1,189,416
Prepayments to suppliers 929,656 718,437
Employee advances and others 178,274 159,149
Deposits for Land Use Right 192,435 216,417
Prepaid VAT   $ 95,413