... 80mm -220mm centrifugal blower:1.Voltage:,220V/50Hz,380V/50Hz;2.Power:,120W,130W,140W,200W;3.Speed:1300RPM,1350RPM,1400RPM ... .We also can produce upon customers' demandsspecified voltage form 110V to 440V and frequency with 50/60 Hz.4.This centrifugal ... forward and the backward curved centrifugal fan . 1.product performance 2, produce process pictures factory stator-punch press stator winding assemble ...