F4-72 C-type FRP centrifugal fan is made of imported resin (FRP) composite material, which has high strength, light weight, good corrosion resistance, aging resistance and low noise. It is an ideal new type of anti-corrosion fan. The impeller is driven by a water-cooled seat or an oil-cooled seat with a corner belt and a motor. The benefits are reduced corrosion motor, slowdown, reduced motor load, etc., thereby increasing fan life.