The PFT35-11 plastic axial flow fan blade is made of imported vinyl resin (glass fiber reinforced plastic FRP) composite material, and the outer casing is made of polypropylene plate heating die welding. The series of fans have the characteristics of simple structure, low noise, easy installation, good anti-corrosion performance, high static pressure and high efficiency, stable operation and small mechanical vibration. Widely used in pickling stations, laboratories, basements, power plants, electroplating, oxidation plants and other places containing corrosive gases. It is also suitable for ventilation and ventilation in general industrial and mining enterprises, warehouses, office buildings, residences and other places. It can be applied to the installation of long pipelines in series to increase the pressure inside the pipeline. The transported gas is not allowed to contain viscous substances, dust and hard particles 150mg/m3, gas temperature ≤60°C, relative humidity ≤.