Introduction: 1. Closed / Vacuum type high-speed disperser is with a cover matching with the container perfectly. 2. Cover and container are connected by big flange, with sealing ring to realize complete closure. 3. It can be vacuumized or input certain pressure, and applicable for different working condition such as vacuumizing, inert gases protection or mixing reaction etc. 4. Easy operation, convenient and safe. 5. Sealing cover is mirror polished, easy to clean. 6. The whole machine looks very nice. Also the machine can be customized complying with GMP Standard to meet the requirements of different industries such as pharmacy, food and cosmetic etc. Working principle: Through the high-speed rotation toothed disc, the materials flow in an annular form resulting in strong vortex. The vortex spiral materials down to the bottom of the vortex. The intensive shearing, crashing and friction force generated between the particles disperse, dissolve and mix materials efficiently.