Refrigeration equipment development and history of artificial refrigeration began to develop in the past, humanity has known the use of natural snow kept cold conditions in a simple device, namely the use of natural cooling source. In China, about 3,000 years ago have been preserved foods using natural ice Taiyuan refrigeration equipment, the seventh century BC, "The Book of Songs" in there hiding food poem about the collection, storage and use of natural cold. Until modern times, people are still in the application of ice, snow and groundwater and other natural cold source. Natural or artificial ice with ice-cooled refrigeration unit, can only reach a limited low temperature, poor technical conditions and health conditions, difficult to meet the various requirements. Modern refrigeration unit is applied refrigerator to cool. In 1834, the United States, J. Perkins trial manpower rotation with ether success as the working fluid can be continuously working refrigerator. In 1844, the United States, J. Gori trial using air as the working fluid in the refrigerator, in the hospital with ice and cool the air. 1872 ~ 1874 Taiyuan Which refrigeration equipment, D. Bell and C.von Linde were invented in the United States and Germany ammonia compressor, and made the ammonia vapor compression chillers, which is modern compression chillers the originator. 1850s, France has successfully developed Cary Brothers sulfuric acid and water as the working fluid of ammonia absorption chillers and absorption chillers. In 1910 there has been a steam jet chiller. In 1930 there have been Freon refrigerant, promote the rapid development of compression chiller. In 1945, the United States successfully developed silver bromide absorption chiller. Shanxi Lung Preservation Technology Development Co., Ltd. was established in 2002 in Taiyuan refrigeration equipment offer, Shanxi Academy of Agricultural Sciences, Institute of Science and Technology under the storage and preservation of agricultural enterprises, but also the National Agricultural Science and Technology Park (Taiyuan) enterprises in the park. The company specializes in all types of fruit and vegetable preservation library, pre-cold storage, wholesale and retail business cold storage, cold storage design, construction, refrigeration equipment, as well as fruit and vegetable storage technical advice, guidance and other after-sales service. Cold storage is not used should be how to properly conserve if a cold for a long time do not use and do not want to go out on loan. At this idle time to check a few questions. First, immediately cut off the power supply of cold storage, so that one can save power, and second, you can cut off the power to suspend the operation of Taiyuan cold storage refrigeration equipment designed to ensure the safety of cold storage. That is to ensure that there is cold inside the ventilation function, cold dry, it will not be contaminated else. Meanwhile regular order, as well as cold storage units dust the condenser on the cold inside. Shanxi Lung Preservation Technology Development Co., Ltd. was established in 2002, Shanxi Academy of Agricultural Sciences, Institute of Science and Technology under the storage and preservation of agricultural enterprises, but also the National Agricultural Science and Technology Park (Taiyuan) enterprises in the park. The company specializes in all types of fruit and vegetable preservation library, pre-cold storage, wholesale and retail business cold storage, cold storage design, construction, refrigeration equipment, as well as fruit and vegetable storage technical advice, guidance and other after-sales service. Taiyuan refrigeration equipment manufacturers | Shanxi Lung preservation (certified) | refrigeration equipment provided by the Shanxi Taiyuan Lung Preservation Technology Development Company Limited. Shanxi Lung Preservation Technology Development Co., Ltd. (www.sxltbx.com) is Taiyuan, heat, refrigeration and air conditioning equipment leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. Lung preservation of leadership in Shanxi with the staff warmly welcome all inquiries negotiations to create the Shanxi Lung Preservation better future.