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RELATED PARTY TRANSACTIONS (Details Textual) (USD $)
12 Months Ended
Apr. 30, 2014
Apr. 30, 2013
Related Party Transaction [Line Items]    
Real Estate Property Transfer Value   $ 449,660
Noncontrolling Interest Booked Value   200,766
Accounts receivable 8,614,396 4,139,768
Taian Gas Group and Subsidiaries [Member]
   
Related Party Transaction [Line Items]    
Revenue from Related Parties 274,348 1,345,524
Accounts receivable 0 117,751
Recorded Amount Of Accounts Receivable   $ 647,518