Note 6 - Property, Plant and Equipment, Net - Schedule of Property, Plant, and Equipment (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Property Plant and Equipment, Gross	$ 16,168,626	$ 16,016,325
Less: accumulated depreciation	4,056,837	3,622,153
Property plant & equipment, net	12,111,789	12,394,172
Land [Member]
Property Plant and Equipment, Gross	228,872	228,872
Building and Building Improvements [Member]
Property Plant and Equipment, Gross	1,890,494	1,837,009
Machinery and Equipment [Member]
Property Plant and Equipment, Gross	$ 14,049,260	$ 13,950,444

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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