External motor, both for fire smoke can also be used for general ventilation. If equipped with two-speed motor htfc wind chassis, enabling fans usually for low speed wind chassis, as a general ventilation use; and automatically converted to high-speed operation when the fire blast cabinet, as with fire smoke. Built-in motor, can only be used for general ventilation. Because B-type machine with respect to the lower A new type of machine noise wind chassis, so only the fan is used for ventilation, it can be preferred B-type machine. The new wind ventilators filtration system filtration system is divided into early effect, in effect, sub-efficient and highly efficient four kinds of filters. Ventilator settings were both at the inlet air filter can effectively filter the air of dust particles, fibers and other impurities, effectively prevent outdoor airborne dust and other impurities into the interior achieve the purpose of purification, and to ensure that the host's hot exchange member is attached dirt affect device performance. Wind chassis fresh air ventilator | Rich ventilation equipment (certified) | wind chassis provided by Dezhou Plumper ventilation plant. Dezhou Plumper ventilation plant (0) is the leader in Dezhou, fans, ventilation equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Rich ventilation equipment in leadership with the staff warmly welcome all inquiries negotiations to create rich, ventilation a better future.