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Note 1 - Summary of Significant Accounting Policies - Net Sales by Geographical Region (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue, Percentage	100.00%	100.00%
Revenue	$ 18,273,442	$ 22,526,201
Reportable Geographical Components [Member] | North America [Member]
Revenue, Percentage	17.00%	3.00%
Revenue	$ 3,121,797	$ 656,032
Reportable Geographical Components [Member] | AUSTRALIA
Revenue, Percentage	2.00%	2.00%
Revenue	$ 401,485	$ 524,255
Reportable Geographical Components [Member] | Asia [Member]
Revenue, Percentage	23.00%	15.00%
Revenue	$ 4,256,585	$ 3,372,286
Reportable Geographical Components [Member] | Europe [Member]
Revenue, Percentage	58.00%	80.00%
Revenue	$ 10,493,574	$ 17,973,628

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