Our TG turbine ventilators are made of stainless steel , and import the UBC bearing from USA.All the parts of the turbine ventilators are finished by the professional molding tools, they are assembled after checking by the professional equipments.It works without the electricity power, they can change our air condition indoors, leave us a comfortable environment.Also, when used in a workshop or a storeroom, they can advance the working environment, and this improves the workers' efficiency.