The shell of LED lamps is generally made of engineering plastic die-casting, but there are still a large number of aluminum alloy shells currently used. Aluminum profiles have the characteristics of high strength, corrosion resistance and long service life. For the power of the lamp, choose a cast aluminum alloy shell, the effect is better than other materials, aluminum has a good thermal conductivity, and can be made very thin, and the maximum heat dissipation area is improved. It can be said that the application of aluminum profiles in LED lights is the future trend.