Chinese Gum Rosin in X and WW grade Specifications: Grade Name of specificationsXWWAppearanceTansparent SolidColourSlightly YellowPale YellowCorrespond to Standard Glass ... rubber, plastic, paper, ink, glass, and inner-work paint industry etc.Special properties and uses:-A natural organic resin, mainly composed ... the manufacture of soap, paper, paint, rubber, resin, electric and synthetic organic, etc.