According to the information of the top ten brand networks, Yimei (Shanghai) Air Conditioning Equipment Co., Ltd., 1935 was established in the United States, and is a professional global energy-saving air conditioning product and overall solution provider. 1988 entered the China market, providing customized energy-saving central air-conditioning products, water-ground source heat pumps, water chillers, constant temperature and humidity machines, commercial air conditioners, etc. And provide one-stop pre-sale, in-sale and after-sale services. Shandong Fulda Air Conditioning Equipment Co., Ltd., founded by Fulda 1995, is a well-known brand in the field of water source heat pump host manufacturing and a general equipment manufacturer dedicated to the research and development of geothermal central air conditioning. 20 1 1 was acquired by carrier air conditioning group. Fulda has independent intellectual property rights of water-ground source heat pump invention patent. At present, there are more than 200 specifications and models of water-ground source heat pumps, which are widely used in hotels, apartments, cinemas, gymnasiums, hospitals, office buildings and other places.