Note 6 - Major Customer and Vendor (Details)	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Details
Number Of Major Distributors	10	10
Concentration Risk, Other Risk	Sales to two distributors represented 26% and 21% of total sales	Sales to two distributors represented 36% and 29% of total sales
Concentration Risk, Product	Sales of three products represented 56%, 12%, and 10% of total sales	Sales of one product represented 71% of total sales
Concentration Risk, Supplier	The purchases from two other vendors represented 31% and 19% of the Company’s total purchases	The purchases from two other vendors represented 34% and 27% of the Company’s total purchases