Hunan Zhengda Hi-tech is a private owned, share holding company. It was reconstructed from Changsha Zhengda Heater Plant which was founded on May 1993.Hunan Zhengda Hi-tech reshuffled its organization in 2003, and expanded its plant to 43,336m2, of which construction area is 20,xxxxx Hunan Zhengda Hi-tech owns fixed assets of 30,000,000 RMB and more than 200 employees, among whom 40 are senior technicians. Hunan Zhengda Hi-tech is dedicated in research, development and application of the optimal air systems for paper machine. Based on absorption and digestion of the international advanced technology and consideration of the domestic market situation, Hunan Zhengda Hi-tech has developed a compete line of paper machine airing and drying equipments, such as closed hood, Yankee hood, hot air dryer for coating, heat recovery system, pocket ventilation system, th-rough air dryer, pulp board hot air dryer, coater and many kinds of air exchangers, filling some technical gaps in China. With good quality and price, Hunan Zhengda Hi-tech enjoys a dominant market share in China and its pro-ducts have been exported to Australia, .Burma, India, Indonesia.