The main structure of the external light billboard is iron frame plus spray painting, and some are covered with metal edges, plus spotlights. For example, the production of large billboards, such as billboards on the roof and column advertisements, is the heart of the billboards. It is unsafe to have a solid steel structure as support.

The interior light billboard is commonly known as the outdoor light box. The materials of the spray painting are different, and the built-in light tube, so that the picture of the billboard during the day and night is very clear. Good light transmittance, uniform, relatively high brightness.