poultry fan blower 1.GRP outline border,strong anti-corrosion ... output 3.High quality 4.Low failure rate Poultry fan blower Description:Material : glass fiber reinforced plastics(GRP) outline ... shutter is PVC,also resist corrosion and airslake. Fan blade is made of nylon and fiber material,have ... ) Low failure rateBecause of the electric motor and fan blade connected directly ,it has no belts,belt pulley ...