This product is a phenolic reinforcement resin, which is better compatible with NR, BR, SBR, CR, and NBR. During the dense refining process, it has the effect of softening, plasticizing and sticking to the rubber. A cross -linking reaction occurs. The generated 3D network structure and the network structure of the rubber molecule penetrate each other, which can significantly improve the hardness, abrasion resistance, tearing strength, stretching strength, and fixed extension stress of sulfide gum.