Note 6- Land Use Right (Details) - USD ($)	12 Months Ended
Apr. 30, 2017	Apr. 30, 2016
Details
Amortization expense - Land use rights	$ 52,227	$ 55,619

Represents the monetary amount of Amortization expense - Land use rights, during the indicated time period.

No definition available.

Name:	fil_AmortizationExpenseLandUseRights
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration