Note 6 - Property, Plant and Equipment, Net - Schedule of Property, Plant, and Equipment (Details) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Property Plant and Equipment, Gross	$ 24,386,158	$ 16,620,221
Less: accumulated depreciation	8,655,804	5,329,438
Property plant & equipment, net	15,730,354	11,290,783
Land [Member]
Property Plant and Equipment, Gross	228,872	228,872
Building and Building Improvements [Member]
Property Plant and Equipment, Gross	2,925,815	2,061,887
Machinery and Equipment [Member]
Property Plant and Equipment, Gross	$ 21,231,471	$ 14,329,462

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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