Note 5 - Property and Equipment - Property and Equipment Summary (Details) - USD ($)	Dec. 31, 2019	Jun. 30, 2019
Plant and equipment, gross	$ 2,713,410	$ 2,032,671
Accumulated depreciation	(1,414,955)	(1,275,657)
Total property, plant and equipment, net	1,298,455	757,014
Plant and Equipment [Member]
Plant and equipment, gross	1,538,300	1,511,629
Furniture and Fixtures [Member]
Plant and equipment, gross	200,147	188,370
Vehicles [Member]
Plant and equipment, gross	388,354	332,672
Building [Member]
Plant and equipment, gross	$ 586,609

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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