9993 has wide versatility, almost suitable for all solvent-based systems, good matching with commonly used paint resins and has good versatility in paint systems; It has excellent ability to prevent flocculation and back coarsening. Compared with small molecule wetting dispersant, it can greatly prolong the storage stability of grinding paste. It can significantly improve the wetting and dispersing ability of the base material to the pigment filler, greatly reduce the operating viscosity of the grinding system, increase the pigment filling amount, improve the fluidity and shorten the grinding and dispersing time.