... new Iron Drums of 225kgs net of each, Gum Rosin ww grade, resin Used in paper, ink, rubber, paints and varnish ... , glue, soap, synthetic resins.Features:1) China original gum rosin WW grade2) Natural organic compound, mainly composed of resins3) Possesses chemical ... , glue, soap, synthetic resins, chewing gum and other chemical industries WW Grade Gum Rosin