RTSG series three-roll mill adopts three rolls rotating in opposite directions and different speeds relative to each other. By squeezing and friction, shear force is created to grind, refine and disperse the fed materials. Three-roll mill performs a high grinding fineness among all wet grinding devices, and is qualified for handling materials with high-viscosity and ultra-fine particles. The suitable application is medium/high viscosity material particle refining in industries such as paint, ink, pigment, plastic, etc.