◆ Excellent material, quality assurance Xinfeng ventilator 500 high quality stainless steel body, even in acidic, alkaline and other harsh environments are not affected. Closed special-made bearings, and then completely enclosed in a special sleeve in order to ensure that the turbine under normal working conditions continued and steady work, and without the need for maintenance. Unique support structure to ensure that the turbine can withstand typhoons.

◆ broad application may be no leakage Xinfeng roof ventilator 500 unique angle diameter, as long as the angle from 0 to 22.5 light steel industrial plant of various pressure plate roof, concrete roof can be installed. And does not require support, easy to install;

Civil areas: for the residents of the community flue outlet to solve the sometimes due to high winds and low air pressure caused by air intrusion to avoid the house full of fumes and odors. According to project example demonstrates that even when the wind speed at 200 km / hour, rainfall of 200 mm / hour, ventilation is still running good, no leaking.

Method to determine the number of ventilators = Building ventilation volume × number of air changes per hour ÷ ventilation capacity of a single ventilator. Building volume = length × width × height Air changes per hour: According to the building using the features identified by the following table a number of air changes per hour. Capacity of a single ventilator breath: According to different perennial wind, roof height, indoor and outdoor temperature.