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  • Rosin Resin SOR Series – SOR 424

    Rosin Resin SOR Series – SOR 424

    Rosin resin SOR 424 is a light-colored and stable modified resin, which is based on rosin and unsaturated polyacid as the basic raw materials. Rosin and maleic anhydride for addition reaction and esterification of pentaerythritol, and developed by refining, decolorization, modification and other processes. The varnish produced by it has the advantages of high brightness, high hardness and strong adhesion.