Natural ventilation: relying on indoor and outdoor temperature, air pressure and other air pressure difference generated ventilation window ventilation device. Wall ventilators: Hanging on the wall is to analyze the development status of the ventilation fan Chinese fan products not involved or will be involved in the field, there are many manufacturers of fiberglass roof fan, fan products in coal gangue, dry process clinker technological project, the potential market of more than 20 areas of energy and resource comprehensive utilization of metallurgical industry in the future will have greater prospects for development. Fans future development will further improve aerodynamic efficiency, device efficiency and the utilization efficiency of the fan to reduce power consumption; with variable pitch axial fans instead of large centrifugal fan; reduce fan noise; improve the smoke, dust exhaust fan impeller and machine Shell wear; to achieve variable speed adjustment and automatic adjustment. Background noise axial roof fan, roof fan Suqian, Flextronics ventilators provide the Liaocheng Wei Chong ventilation equipment. Axial roof fan noise floor, Suqian roof fan, ventilation Flextronics Flextronics is Liaocheng ventilation equipment (www.lcwctf.com) (www.lcwctf.com) this year introduced a new upgrade, the above picture is for reference only, please You call Tel picture on this page or to obtain the latest information, contact: Du Jingli.