Beijing APT Technology Development Co., Ltd established in 2005, is a professional high efficiency filtration extraction manufacturing company which embraces research and design, process and sales into one body, is the first environmental protection equipments manufacturing corporation in China which adopted European technologies〠met European environmental standards to developã€designã€produce high efficiency fume extraction APT full series are composed of imported special motorã€intelligent control system and multistage efficient filtration system. Apt has developed series filtration systems and control systems according to different fields and conditions, and therefore it can fulfill the personalized requirements of users.