Under the general trend of global green development, radiation refrigeration technology, as an innovative scheme of zero energy consumption cooling, is accelerating from laboratory to large-scale application. This technology has successfully overcome the energy consumption bottleneck of traditional refrigeration by transforming the space class radiation cooling concept into coatings, films and other products, and provided a new solution for green buildings and industrial energy conservation. Relying on the industrial advantages of the Yangtze River Delta and the Great Bay area of Guangdong, Hong Kong and Macao, this cutting-edge technology is actively expanding along the "belt and road" and European and American markets, realizing a global layout. At present, the passive radiant cooling solution has been applied in more than 200 projects in nearly 30 countries and regions around the world, effectively reducing the energy consumption of buildings and facilities, showing great potential in coping with climate change and promoting sustainable development.