The hull and impeller of FT35-II type glass steel axial fan are made of composite glass steel material. It is characterized by its good anti-corrosion performance, high pressure coefficient, smooth operation, small size, simple structure, low noise and convenient installation.It is widely used for the ventilation in acidic environment, laboratory, basement, power plants, corrosive gases place, factory, warehouse and office building. Particles or dust content should be less than 150mg/m³, the temperature should be less than 60°and the relative humidity should be less than 100%.