The main raw material is cracking C9, which mainly contains vinyl toluene, indene, methyl indene and other unsaturated aromatic compounds. Added C5 in C9, copolymerized and modified to get C5/C9 copolymer Hydrocarbon resin, since have the both characteristic of aliphatic resins and aromatic resins, improved the compatibility with EVA; at the same time, it is also have good solubility in various solvents.