Natural ventilation: relying on indoor and outdoor temperature, air pressure and other air pressure difference generated ventilation window ventilation device. Wall Ventilation: It is hanging on the wall roof ventilators axial fan Features 1, air flow, ventilation effect is good; 2, fiberglass hood Seiko, is a cylindrical steel materials, hardness, not afraid wind and rain. ; 3, DWF roof axial fans have appearance fiberglass roof fan manufacturers, weatherproof characteristics; 4, the installation does not take up interior space, less demanding on the site; 5, the choice of roof anemometer tube axial fans generally do not need to install Maintenance is relatively simple. Flextronics ventilation (Figure), bottom-noise axial roof fan, roof fan by the Liaocheng Nanjing Flextronics ventilation equipment provided. Liaocheng Flextronics ventilation equipment (www.lcwctf.com) (www.lcwctf.com) adhere to the "people-oriented" business philosophy, with a professional staff, and strive to provide the best products and services to contribute to the community, and welcomes new and old customers throughout the visit, sincere cooperation for a better future. Flextronics ventilators - your trusted friend Address: Shandong Liaocheng Development Zone Industrial Park, Contact: Du Jingli.