Billboards are a type of Visual Identity (VI) application, serving as an effective means for organizations or enterprises to promote themselves. Jiangxi Billboards | Nanchang Billboards | Ganzhou Billboards - Jiangxi Haosin Advertising Decoration Co., Ltd. are commonly used in public places such as streets, factories, and hotels, making them a powerful tool for corporate self-promotion. Billboards typically feature stainless steel frames, tempered glass or polycarbonate panels, and aluminum alloy roofs, with the panels able to be opened for更换 promotional content. In some government institutions, blackboards are also being used as billboards, such as on both sides of corridors in certain units, along cultural corridors in some schools, and on national policy宣传 walls in some village groups. The use of blackboards as billboards is a common practice. The benefits of using blackboards include ease of layout, lower costs, and convenient and quick information updates. Although times are constantly evolving, the traditional method of using blackboards as billboards is unlikely to be phased out anytime soon.