Note 5 - Plant, Property, and Equipment, Net: Property, Plant and Equipment (Details) - USD ($)	Mar. 31, 2018	Mar. 31, 2017
Property, Plant and Equipment, Gross	$ 22,211,740	$ 18,176,444
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(5,418,327)	(3,689,309)
Plant, property, and equipment, net	16,793,413	14,487,135
Machinery and Equipment
Property, Plant and Equipment, Gross	3,594,861	2,254,813
Office Equipment
Property, Plant and Equipment, Gross	769,589	717,259
Building
Property, Plant and Equipment, Gross	13,606,722	12,401,320
Leasehold Improvements
Property, Plant and Equipment, Gross	$ 4,240,568	$ 2,803,052

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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