Gum rosin ww grade Soft point 166-170 PACKAGE:225kg galvanized drum or 25kg bag Origin: Guangxi China Gum rosin for coatings WW Grade 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,soap,Organic synthesis,etc.Acid value(mg/g);166 min.Unsaponiflable matters:5.0% ...