Gum rosin is made of natural resin,is redpine rosin.color is pale yellow.without any impurities 1.Soft point 166-170 2.package: 225kg net in galvanized drum 3.Origin: Guangxi China 4.colour: transparent light yellow GUM ROSIN WW GRADEGUM ROSIN WW GRADE(ex Pinus Massoniana)Appearance:transparentColor(species standard);light yellowSoftening point(R and B,deg C);76.0 min.USAGEPaint,ink,rubber,paper, ...