China environmental protection industry partners, the world's largest solar water heaters and hot water system suppliers. As a professional engaged in solar energy application technology research, manufacturing and marketing of high-tech enterprises, the sun rain has tens of thousands of families to provide global solar hot water system solutions.

Business scope involved: all glass vacuum collector tube and flat plate solar water heater, solar heating.

In the technology innovation and product development, sun rain with Beijing University, Southeast University and other research institutes to carry out a number of cooperation, to assume a number of national Torch Program projects. In cooperation with Beijing University of high-temperature-film sputtering all-glass vacuum tube production line with advanced international level, its high efficiency and high temperature pipe pressure-bearing type solar water heater" awarded by the national Ministry of science and technology, Ministry of Commerce, the General Administration of quality supervision and administration of environmental protection jointly issued the" national key new product "certificate.