Submarine customized semiconductor cooling water cooler is mainly used in the production of industrial control systems and equipment products such as stainless steel cold water chillers. Its main uses are communication outdoor cabinets, outdoor liquid crystal display systems, electronic and electronic control cabinets, and other closed space cooling and heat dissipation. In the application of semiconductor refrigeration technology, it is necessary to adopt measures to local conditions, according to the use of different requirements, design different performance, in order to expand the application field of the technology, we can firmly believe that the future of semiconductor refrigeration technology will develop better and better, wider and wider.