Note 4 - Plant, Property, and Equipment, Net: Property, Plant and Equipment (Details) - USD ($)	Sep. 30, 2015	Mar. 31, 2015
Details
Machinery and Equipment, Gross	$ 1,794,701	$ 1,495,311
Office Equipment and Automobiles	233,818	193,519
Buildings and Improvements, Gross	13,012,067	12,586,247
Leasehold Improvements, Gross	1,257,605	1,302,465
Property, Plant and Equipment, Gross	16,298,191	15,577,542
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(2,925,676)	(2,713,381)
Plant, property, and equipment, net	$ 13,372,515	$ 12,864,161