There are the following types of LED lamps: \x0d\ According to the structure, there are full epoxy package, metal-based epoxy package, ceramic-based epoxy package and glass package. \x0d\ According to the angular distribution diagram of luminous intensity, it can be divided into three types: high directivity, standard type and scattering type. \x0d\ According to whether light is doped with scattering agent, it can be divided into colored transparency, colorless transparency, colored scattering and colorless scattering. \x0d\ is divided into: spotlight, ceiling lamp, ceiling lamp, downlight, bulb lamp, lamp tube and flat lamp according to the installation method. \x0d\ Among them, spotlights include ceiling lamps, track spotlights and ordinary small spotlights. Because some spotlights (ceiling lamps) are installed according to their installation methods (embedded in the ceiling), many factories collectively refer to ceiling lamps and downlights as ceiling lamps. \x0d\ Outdoor advertising light box adopts LED dot-matrix lighting, which belongs to all-epoxy encapsulated scattering flat lamp.