Note 10 - Income Taxes: Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)	Mar. 31, 2018	Mar. 31, 2017
Details
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Impairment Losses	$ 87,476	$ 240,504
Deferred Tax Assets, Revenue and cost, Current	72,658	181,166
Deferred Tax Assets, Depreciation		50,514
Deferred Tax Assets, Other	40,253	36,337
Deferred Tax Assets, Operating Loss Carryforwards	7,738	7,738
Deferred Tax Assets, Valuation Allowance	(4,643)	(7,738)
Deferred tax assets	$ 200,387	$ 508,521