FRP negative pressure fan is a new type of ventilation equipment made of anti-corrosion FRP material. It belongs to axial flow fan. Because the outer frame of the fan is made of anti-corrosion glass fiber reinforced plastic, the working principle is to use negative pressure to change air to achieve air circulation and ventilation. So it is called a FRP negative pressure fan. FRP negative pressure fan has the characteristics of corrosion resistance, high air volume, low energy consumption, low speed and low noise.