Development and use of wall-mounted solar water heaters solar Wenzhou is the development and utilization of new energy and renewable resources, an important part of solar energy has a wealth of resources, inexhaustible, everywhere can develop applications without having to develop applications without mining and transport, will not pollute the environment and destroy the ecological balance and so on. Therefore, the development of solar energy Gansu will have a huge market potential. China is one country rich wall-mounted solar water heaters, solar Wenzhou resources pinnacle, the total area of ??more than two-thirds of annual radiation 5020MJ / m, annual sunshine hours over 2200 hours, the paint is the Northwest, the development and utilization of solar energy has great potential and is a very attractive industry. Wall-mounted solar water heaters, solar Wenzhou products plate solar collector solar thermal utilization low basic gone, it has been the world market leader in solar energy products. Flat plate collectors have been widely used for domestic water heating. Swimming pool heating, industrial water heating, heating and air conditioning and other buildings in many areas.