Maleic Resin is a type of light yellow and transparent flake solid that is made of refined gum rosin and maleic anhydride, and is esterified by pentaerythritol. Soluble in coal tar, ester, plant oil, turpentine, insoluble in alcohol. It has features of light color, color retention, has well solubility with nitrocotton, Maleic resin can improve the hardness and gloss of paint surface, not only that, it has excellent performance at water-resistance. For fast-dry enamel paint manufacturing, it can save consumption of tung oil.