Maleic acid resin RGM series are produce of esterification of maleic anhydride modified rosin with polyalcohol. Mainly used in polyurethane paint, nitrocellulose, lacguer, amino baking paint, acid cured paint, hot-melt road mark paint and inks. Increase bright gloss, hardness, desirable desiccation, buildiness, and excellent abrasion resistane and yellowing resistance.