The cement purchasing network (Zhejiang Hongshi cement sales Co., Ltd. ) established in early 2015 has built more than 5000 offline sales outlets after more than one year of rapid development. By using Internet technology and online integration, it adopts B2B + b2c sales mode to build a "+ Internet" cement e-commerce trading platform. We aim to provide customers with the lowest cement price, the most comprehensive cement brand and the most convenient shopping environment, and provide customers with the best quality services and commodities. From selling cement alone to selling building materials and providing services, it has become the most competitive building materials channel in the cement industry.