Billboards are a VI application, an effective means of self-promotion for organizations or corporate entities. They are commonly used in public places such as streets, factories, hotels, etc. Typically, they are framed with stainless steel, featuring tempered glass or toughened plastic panels, and an aluminum alloy ceiling. The panels can be opened to change promotional content.

In some public institutions, blackboards are also being used as bulletin boards, such as along the corridors in some units, on the sides of cultural corridors in some schools, and on the policy promotion walls of some village groups. The use of blackboards as bulletin boards is a common practice.