Panasonic Appliances Air-Conditioning and Refrigeration(Dalian)Co.Ltd.is founded in September 11.1992.Its product is popular among the domestic and global users after years of hard efforts ,development and renovation. Panasonic Refrigeration devotes itself to be an expert in comprehensive solution of cold and heat. In present ,the three business areas of the company are: LiBr absorption unit (ABS) business area with various types of sets such as steam type, hot water type, direct combustion type, heat pump type, flue gas utilization type, etc. Gas heat pump air conditioning (GHP) business area with Gas heat pump type multi-connected unit and water chilling unit .It is a new product with gas engine used in special cars. Using primary clean energy , it plays a leading role in environmental protection. The vacuum boiler can be used for heating . The device is a safe , energy-saving and environmental-friendly product which can serve several purpose and operates under negative pressure.