Gum rosin is made of natural resin, its generalformulais C20H30020. Because of its special properties, it can be usedinpaint, papermaking, soap, rubber, chemicals and medicine.

Top grade, slight yellow, Softening point ≥76, Acid value(MGKOH/g)≤166,Non-saponifiable(matter %)≤5,Insoluble matter in ethanol % ≤0.03,Ash%≤0.02.