Qingdao OAK Central Air Conditioning Co., Ltd. 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 was greatly upgraded and became a leading HVAC system solution provider in commercial and industrial application area. Our company has top production equipment imported from Germany and the USA in combination with German quality and techniques management system. Our company established joint testing center with National academy of architecture science and set up incorporated R&D center with the 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 hi

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