gum rosin China original gum rosin WW grade Gum Rosin · Properties and usesGum rosin is a kind of natural resin, a mixture with various organic acids, and with special chemical activity, and important chemicals for paper-making, soap, paint, ink, adhesive, rubber, food, synthetic resin, electric insulating material and building industries. · Specifications (National Std UDC GB/T8145-2003) ...