7-ELEVEN owns the largest logistics system nationwide, efficiently delivering goods at different temperature levels to all the stores and thereby creating a new model in the distribution industry. To preserve the freshness of different products, merchandises are sorted professionally into five different categories according to their attributes. The five categories include products preserved under room temperature, refrigerated products, frozen products, fresh food, and books/publications. This interconnected product logistics system at 7-ELEVEN has become the most competitive one in Taiwan