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Note 7 - Land Use Rights: Schedule of Other Assets (Details) - USD ($)
Oct. 31, 2016
Apr. 30, 2016
Details    
Land use right, gross $ 2,344,722 $ 2,455,519
Accumulated amortization of Land Use Rights (430,033) (422,826)
LandUseRight $ 1,914,689 $ 2,032,693