Wal-Mart is the largest company in the world (in terms of turnover) and a worldwide chain enterprise. Wal-Mart is mainly involved in retail. Wal-Mart has four main forms: Wal-Mart Shopping Plaza, Sam Member Store, Wal-Mart Supermarket and Wal-Mart Community Store. The company has always adhered to the core values of "respecting individuals, serving customers and pursuing Excellence", focused on opening every store and serving every customer, fulfilled the company's core mission of "helping customers save money and make life better", and constantly created extraordinary things for customers, members and employees.