Features: - production of sub-micron or nano-sized particles with narrower size distribution; - use of small beads 0.3-2.0 mm as grinding media; - grinding barrel/agitator manufactured of alloy steel, pu or ceramic as standard materials; - turbine-agitator with pins; - dynamic separation of beads with mesh rings; - no mechanical sealing; - easy installing and maintaining; - low grinding temperature, will not pollute the material; - high grinding efficiency. -