OAK CENTRAL AIR CONDITIONING is a technology and quality oriented joint venture Company with more than 15 years experience in HVAC industry. After acquisition of GEA Happel Air Condition Shandong Ltd. in 2006 which was a subsidiary of German GEA Group Company, OAK Central Air Conditioning were greatly upgraded and being a leading HVAC system solution provider in commercial and industrial application area. The company has top production equipment imported from Germany and USA in combination with German quality and technics management system, withal the company established joint testing center with National academy of architecture science and set up incorporated R&D center with most famous HVAC institutes of Tsinghua University. The reliability of our products is ensured by constant trials and demanding functional tests that allow us to maintain the highest standards of quality. All this is proven by ISO certification since 1995 and re-certified according to ISO 9001:2000 since 2003,

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