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v3.23.1

Note 1 - Summary of Significant Accounting Policies - Sales by Product Line (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Revenue, Percentage | 100.00% | 100.00%
Revenue | $ 4,011,519 | $ 3,637,236
Water Segment [Member] |  |
Revenue, Percentage | 36.00% | 16.00%
Revenue | $ 1,434,919 | $ 592,990
Ceramics Segment [Member] |  |
Revenue, Percentage | 35.00% | 52.00%
Revenue | $ 1,409,372 | $ 1,880,118
Plastics Segment [Member] |  |
Revenue, Percentage | 29.00% | 31.00%
Revenue | $ 1,167,228 | $ 1,138,597
Corporate Segment [Member] |  |
Revenue, Percentage | 0.00% | 1.00%
Revenue | $ 0 | $ 25,530

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