Heat dissipation performance is an important indicator that distinguishes the quality of lighting fixtures. With a high heat dissipation coefficient, it can fully extend the use time and light decay time of the lamp. Good lighting fixtures generally use heat sinks with high heat dissipation coefficient and high-purity aluminum materials. The structural design is mainly based on multiple heat dissipation teeth, high fin density, and large heat dissipation area. Circular structures such as ceiling lights, ceiling lights, spotlights, industrial and mining lights, and chandeliers are generally made of aluminum profiles+CNC lathes to make heat sinks, which are then oxidized into black or aluminum natural colors for installation and use; High quality lighting fixtures are often designed with aluminum profiles, CNC milling chambers, and deeply buried circuit boards to increase heat dissipation coefficient and effectiveness; The exterior of streetlights is generally protected by aluminum alloy die-casting parts, combined with sealing rubber rings to increase waterproof level. The surface is also sprayed with outdoor powder.