... Colophonygum rosin is important raw materials for the manufactire of Soap, Paper, Paint, Rubber, Resin, Electric and Synthetic Orgainc. ... it is an important raw material for the production of paper, coatings, inks, rubber, soaps, electronic industrial products, ... 225kg net each drum.(2) Bag: Intertexture or kraft paper bag, 25kg net each bag.4. Technical specification:The ...