Chain supermarkets and convenience stores have many stores, many areas and difficult management. The use of paper price labels is not conducive to the unified management of the headquarters. MTAG electronic price tag can realize the centralized management or distribution management of regional chain stores under the headquarters. The headquarters can manage the electronic price tags of all stores on the intelligent retail platform, and adjust the prices uniformly; it can also distribute the management authority of the electronic price tags to various regions or independent stores, so that they can manage the price changes of products themselves, and then view the price change records of the electronic price tags in the background. In this way, it will be very easy for the headquarters to control the price of the products in the store. At present, gorilla convenience store, convenience bee convenience store, easy express and other chain convenience stores have begun to use electronic price tags.