... enterprise mainly produces Centrifugal fan and blower, external rotor axial fan,ventilation fan, Duct fan, shaded pole motor, external rotor fan motor,aluminum die ... production lines and scientific management, "low noise, high air volume, stable running and long life time" Fans has ... Single-phase capacitor operation S: Three-phase3. 68: Motor air gap diameter4. L25: Core length code5. P2: Motor ...