Metro Supermarkets is a retail and wholesale supermarket group and a constituent company of the German stock index DAX. It is one of the top 500 companies in the world and the largest retail and wholesale supermarket group in Germany, the second largest in Europe and the third largest in the world, with outlets in 32 countries. Metro Supermarkets entered the Chinese market in 1995 and has opened 86 malls in 58 cities. Metro is a membership-based large retail and wholesale supermarket, mainly targeting corporate customers. In recent years, Metro's business has also shifted to the general consumer. Metro's development is gradually slowing down at the moment of digitization and consumer upgrading in China, and digitization is an imperative. And the foundation and prerequisite of supermarket digitalization is the digitalization of product information.