Window ventilation: external structure attached to the building wall and door between (doors, windows, walls) or on, a certain wind pressure, watertight, airtight, acoustic and other properties in working condition, and to achieve Controlled ventilation means for indoor and outdoor. Can be installed in any window type and location, can be mounted on the window frame, can also be mounted on the sash can also be mounted as the lower part of the windowsills throughout the sill. Window ventilation can be installed horizontally, vertically mounted; can be installed in the upper part of the glass factory fiberglass roof fan can also be installed in the lower part of the glass. Natural roof ventilation using outside air, indoor and outdoor temperature difference, relying on the principle of suction and chimney effect background noise axial roof fan, vertical air pollution forced the space below the fan air flow, smoke, gases and other harmful gases moisture vapor extraction . Roof ventilators withdrawn with no motor turbine exhaust roof fan, exhaust fan at the bottom of the negative pressure region, through a series of purification to add to the negative pressure from the inlet wall area, in order to achieve ventilation, exhaust, exhaust inflow fresh outdoor air. Roof ventilation dampers leaflet safety net, aluminum motor, impeller, control systems and other components. Fan cover, hair dryer, stainless steel chassis, to reduce the overall weight and good corrosion resistance and increases the roof ventilators elegant look and feel. Intelligent motor systems in harsh environmental conditions start automatically. Roof ventilation usual zero energy, energy efficiency, low noise, high self-cleaning, anti-rain, anti-dew, in line with national energy saving policy, companies have been expanding at the same time, the introduction of international advanced technology, more efficient exhaust, more high-end quality products . The above is the introduction of small series on the roof ventilators to introduce you, I hope you can explain Xiao Bian help! Explosion-proof roof fans, Flextronics ventilation, Wuhan roof fan by the Liaocheng Ventilation Equipment Co., Ltd. Flextronics. Liaocheng Flextronics ventilation equipment (www.lcwctf.com) (www.lcwctf.com) is an industry leader in Shandong Liaocheng, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Flextronics ventilation in leadership with the staff warmly welcome all inquiries negotiations to create Flextronics ventilation a better future.