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Transparent Solid Gum Rosin for Coating. High Purity Grade: First Grade Transparent Solid Gum Rosin with Pale Yellow Gardner Color. High Acid Value: Minimum Acid Value of 166mgKOH/g ensures strong chemical activity. Wide Application: Ideal for coatings, inks, rubber, adhesives, and synthetic resins. Proven Stability: 20 years of export history guarantees stable and consistent quality. Customizable Specs: Acid value and softening point can be customized to meet specific needs. Technical Support: Professional solutions for glossiness, adhesion, and weather resistance.