Embodiments; embodiment is: relying on mechanical air, the wind, forcing the formation of new wind flow field within the system. That XQ-6A-type machine with outdoor fresh air into the interior horizontal fresh air ventilator, with XQ-6B-type machine or XL- series porous convection dryer indoor stale air from the outdoors. The product system is a time to keep indoor air clean and fresh new environmentally friendly appliances. This independent indoor air exchange, purification circulatory system sensible heat fresh air ventilator, the exclusion of indoor air pollution at the same time, enter 100% natural fresh air and fresh air enter the room first by filtration, sterilization, heat, oxygen and many other processing, then into the room. Fresh air ventilator-wide heat application: residential, cafes, KTV, restaurant, office, office buildings, shopping malls, hotels, medical inpatient department, laboratory, computer room, game room, gym, beauty salon, fitness clubs, basements, swimming museum, workshop and other needs professional production environment ventilation fresh air ventilator 150m3 / h-5000m3 / h air flow of fresh air heat recovery ventilators _ Chenyu air conditioning (certified) _ Dongcheng District fresh air ventilator by Wu City Chenyu Air Conditioning Equipment Limited. Wu Cheng Chen Yu Air Conditioning Equipment Co., Ltd. (www.wccykt.com) is a leader in Dezhou, 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 . Chen Yu-conditioning in leadership with the staff warmly welcome all inquiries negotiations to create Chenyu conditioning a better future.