glycerol ester of gum rosin is an important raw material for the ... inks, rubber, soaps, paper e glycerol ester of gum rosin has been general used for ink, adhesive, paint, ... , soaps, electronic industrial products, food grade ester gum, rosin ester resins etc.3. Packing:(1) Drum: Galvanized iron ... technical specification (GB 8145-87) is the national standard of People's Republic of China. If there are ...