Solar energy industry has developed rapidly, and has been used effectively in many fields. Solar water heater is the fastest growing industry in China.
Now,Humans in thd struggle to deal with the environmental problems caused by energy using,and meanwhile,also face the increasing depletion of energy dilemma. Therefore,easy collection,no pollution,and the inexhaustible solar energy's research and exploration become an important task for process of human development.New technology,new materials'appear continually to show its inestimable market prospect.