Gum rosin is made of natural resin,is redpine rosin.color is pale yellow.without any impurities 1.Gum Rosin WW grade 2.Appearance: Light Yellow Crystal 3.High quality, competitive price 4usage: paper, coating, furniturDescription Trade Name:Gum RosinSynonyms:Colophony, RosinGrade:WWApplication:Chemical material for Paper Production, Soap, Ink, Paints, Adhesives, Ruber, Synthetic Resin, Electric ...