1.20 years fan&motor manufactruer 2.competitive price,high quality---CE& CCC 3. ... enterprise mainly produces Centrifugal fan and blower, external rotor axial fan,ventilation fan, Duct fan, shaded pole motor, external rotor fan motor,aluminum die casting ... under zero static pressure. When leaving the factory, the fan’s temperature rise is usually controlled to be within 55K., and ...