Note 2 - Summary of Significant Accounting Policies: Inventories (Details) - USD ($)	Jan. 31, 2018	Apr. 30, 2017
Details
Reserve for obsolete or slow-moving inventories	$ 178,776	$ 163,048

Represents the monetary amount of Reserve for obsolete or slow-moving inventories, as of the indicated date.

No definition available.

Name:	fil_ReserveForObsoleteOrSlowMovingInventories
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant