glycerol ester of gum rosin is an important raw material for the manufacture ... coating, inks, rubber, soaps, paper e glycerol ester of gum rosin has been general used for ink, adhesive, paint, food ... , inks, rubber, soaps, electronic industrial products, food grade ester gum, rosin ester resins etc.3. Packing:(1) Drum: Galvanized iron ... be executed and assured by contract. glycerol ester of gum rosin