CE,ISO9000-TUV, Special for ball mill, Dust-proof casing design, MOQ: 1 PCS, EM318A Ball Mill Inverter 3-phase 380V, 90-250kW Technical ... No need for hydraulic coupler. Track and control mutual collision and friction between attrition medium and work-piece, regulate output power on real ... time under the premise of same quality and working hours. The energy saving rate is up to 8% - ...