Specification :

The theory of running of Rooftop Turbine Wind-driven Ventilators

Our Rooftop Turbine no-power Ventilators do not need electric power instead of easily driving the turbine vanes to rotate by nature breeze or the temperature difference between indoor and outdoor so as to make true the running without cost. They are really practical and energy-saving products without noise and pollution so they can save much electricity and labors for users, in order to lower production cost clearly, to improve the working surrounding of the workshop, to rise the working efficiency and even to strengthen the quality of their products.