Bellows plate fresh air ventilator used to generate wind power equipment, from a wooden box, a wooden sliding wooden handle and activities constituted. Hand-pulled wooden operator activities, the air through the intake port to make bellows leather sack filled with air fresh air ventilator works, but does not collapse, then pull its body can be pushed out of the air within the air by Duct lose, you can enter the smelting furnace for iron. The most common form of the wooden, rectangular wooden boxes constitute activity for the blast so strong fire. Fresh air ventilator is a new ventilation equipment, which uses two-way ventilation, the fresh outdoor air (fresh air) into the interior, but also the polluted indoor air (old style) discharged to the outside. Into the interior of the new air filter new air ventilator brand through the air filter to protect the indoor air clean. Due to the winter and summer a large temperature difference between indoor and outdoor fresh air ventilator, not because of a two-way ventilation for indoor temperature caused large fluctuations in the fresh air ventilator is set to air heat exchanger, so that the old style and new style switching temperature achieve both indoor ventilation also maintain the basic stability of the effect of temperature. Plate of fresh air ventilators, ventilation equipment Plumper (certified), fresh air ventilator provided by Dezhou Plumper ventilation plant. Dezhou Plumper ventilation plant (www.frtfsb.com) (www.frtfsb.com) is a leader in Dezhou, fans, ventilation equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum limits to meet customer needs. Rich ventilation equipment in leadership with the staff warmly welcome all inquiries negotiations to create rich, ventilation a better future.