No power roof fans:
The specific ventilation and ventilation should be based on natural conditions (the size of the outside wind and the type and quantity of your installation). Unpowered ventilators are rugged, maintenance-free, easy to install, and useless, making them safe and worry-free.
With the development of science and technology, people's requirements for environmental comfort are also increasing. The number of plastic steel structure workshops and workshops is gradually increasing, and the rapid development of breeding, flower and other industries. Roofless unpowered fans are becoming an energy-saving and environmentally friendly ventilation device. Widely applied to people's work and life.