... 20 years, Have UL,CE,TUV,RoHS. AC Axial Fan(AC Fan, Axial AC Fan, Axial Fan, Fan Motor)Model: 145FZYSize ... -corrosive and moisture proof structureImpeller: UL94V-0 70% PBT+30%FRPBearing: Ball Bearing or Sleeve BearingInsulation: Class BInsulation Impedance: ... insulation impedance 100MΩ higher Dielectric strength: 0.5mA 1500V AC /minSafety protection: Impedance protection Operating temperature: -10~70 ...