... in the position to supply you the product of Gum Rosin, Gum Rosin is an important raw material in the industria Gum ... Rosin WW GradeSpecification: Softening Point: 76 Deg.C min. Insoluble Matter ... coatings, inks, rubber, soaps, electronic industrial products, food grade ester gum, and rosin ester resins.Packing: Galvanized iron drum, 225kg net each drum.