Product Features: Applied to the dry-type superfine process: the high speed impact can result in not less than 2.5 Mach, normally 1~10 um grains. The homogeneous and superfine products can result from the circular milling in the internal grading structure. Applied to low-melting and heat-sensitive milling owing to the low temoerature and expanded air, and also yielding the double result of blending and dispersion. Advantages: rapid milling, simple structure, free of movable parts, accessible maintenance and operation, minimal floorage, low noise, and vibration-free. High efficiency of milling.