The HGF4-72 series FRP centrifugal fan, based on the original 4-72 model, offers high efficiency, high performance, and high energy efficiency. Its design is more tailored to gas flow characteristics, and its dimensions complement ducting. The HGF4-72 series FRP centrifugal fan is an improved design based on the performance parameters of the 4-72 metal fan, constructed from vinyl resin composite material. This series of fans can transport corrosive gases containing acids, alkalis, and other chemical components. The gases must be free of sticky substances, dust and hard particulate matter must be ≤150mg·m⁻³, the gas temperature must be ≤80°C, and the relative humidity must be ≤100%. This series of fans features high strength, lightweight, durable aging, excellent corrosion resistance, low noise, and smooth operation. It is a multifunctional, corrosion-resistant fan with high efficiency, high performance, and low energy consumption. This series of fans is widely used in applications involving corrosive gases, such as chemical processing, electroplating, oxidation, power plants, laboratories, circuit boards, and environmental protection equipment.