... natural resin, mainly composed of various kinds of resin acids, it can be dissolved easily in many organic solve 1. Specifications Gum ... .030.042. Properties and uses: It is a kind of natural resin, mainly composed of various kinds of resin acids, it ... , coatings, inks, rubber, soaps, electronic industrial products, food grade ester gum, rosin ester resins etc.3. Packing: (1) Drum: Galvanized iron ...