The advertising screen can play the role of product promotion and attracting customers. The function of storefront decoration to improve the quality of enterprises. Lighting plays an innovative role. The role of knowledge popularization. (It can be used to broadcast small information of enterprise products and knowledge of relevant industries) The role of bulletin board. (Promotion, recruitment information release) The display screen can play the welcome words of the superior leaders and various VIPs to visit and guide, and the celebration words of various major festivals.