... e glycerol ester of gum rosin has been general used for ink, adhesive, paint, food and rubber industry. Name ... special chemical activity. So it is an important raw material for the production of paper, coatings, inks, rubber, soaps, electronic ... Drum: Galvanized iron drum, 225kg net each drum.4. Technical specification:The above technical specification (GB 8145-87) is the national standard of People ...