The management system of engineering quality of Airkey has passed the certificate of quality management system ISO 9001:2000; the company has the professional qualification of electromechanical installation (the certificate serial number: B3184044030513). It comprises several Project Manager Departments, has powerful ability of design, construction and integrated project management, and has been in charge of many large system projects of electronic and biological clean room. We have provided services, including air purification engineering and equipment installation services for tens of multinational corporations. The involved fields are microelectronics, photoelectric display, semiconductor, circuit board, glass, packing, food, and biopharmaceutical such high-tech industries.