The F4-72 fiberglass reinforced plastic centrifugal fan is molded from fiberglass and resin, and its performance parameters mirror those of the metal 4-72 fan. This series of fans can transport corrosive gases containing acidic, alkaline, and chemical components. The gases must be free of sticky substances, dust, and hard particles. The humidity must not exceed 150 mg/cm³, the gas temperature must not exceed 80°C, and the relative humidity must not exceed 100%. This series of fans features high strength, lightweight, durable aging, excellent corrosion resistance, low noise, and smooth operation, making it an ideal general-purpose, corrosion-resistant fan. This series of fans is widely used in chemical, electroplating, oxidation, power plants, laboratories, circuit boards, environmental protection equipment, and other environments exposed to corrosive gases. The BF4-72 fiberglass reinforced plastic explosion-proof centrifugal fan can be equipped with an optional EXdl or EXdll Class A or B explosion-proof isolation motor, depending on the customer's requirements. It can transport flammable and explosive volatile gases such as methane, ethane, propane, styrene, toluene, xylene, carbon monoxide, acetic acid, kerosene, gasoline, and furan. Its performance parameters and installation dimensions are consistent with those of the F4-72 fiberglass centrifugal fan.