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Kao Collins Reformulates Sigma Inks to Comply with Swiss Ordinance


Kao Collins announced that its proprietary Sigma solvent-based ink for industrial applications has been reformulated to meet Swiss Ordinance requirements. The company said that the ink now comes in five colors: red, yellow, blue, green, and violet. Kao Collins launched its Sigma ink in 2019 for use in HP 45si thermal inkjet cartridges (“Kao Collins

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