Methanol ester of gum rosin. Is made from gum rosin through esterification with methanol... view more

Mixture of rosins, fatty acids, sterols, high-molecular alcohols, and other alkyl chain materials. It is a resinous yellow-black oily liquid... view more

Terpene polymer. Is polymerized by gum turpentine. Offers strong cohesive force, good aging resistance, heat resistance, acid resistance, alkali resistance and excellent dielectric properties. Is... view more