1. Lamps need materials with good heat dissipation, and the thermal conductivity of aluminum is much larger than that of steel;
2. Aluminum profiles are easy to process, and many stores can handle them, making it easy to obtain materials;
3. There is a layer of dense alumina on the surface of aluminum, which has a good anti-oxidation and corrosion effect;
4. Finally, aluminum is cheaper than stainless steel and has the right price.
The function of LED lamp shell is not only to cover the lamp, but also to prevent static electricity and protect eyes, so there is a lamp shell on each lamp.