It is a kind of natural resin,mainly composed of various kinds of resin acids It is a kind of natural resin,mainly composed of various kinds of resin acids,it ... can be dissolved easily in many organic solvents, and has special chemical activity.So it is ... Gum 6,000MT, Hydrogenated Rosin 10,000MT, and various kinds of Rosin Esters and modified rosin products 32,000 MT ...