The Kroger Co. is one of the world's largest food retailers. The Kroger Co. formats include supermarkets, price-impact warehouse stores, and multi-department stores, which are similar to supercenters, but offer an expanded variety of national brand appeal and general merchandise. Kroger also operates convenience stores, C-stores provide valuable synergies for the rapid expansion of supermarket fuel centers. Kroger fine jewelry stores under names like Fred Meyer Jewelers and Littman Jewelers. This is a high-margin business with good cash flow. Kroger is the only major U.S. supermarket company to operate an economical three-tier distribution system. Kroger also operates food production or manufacturing facilities producing high quality private-label products that provide value for customers and enhanced margins for Kroger. Kroger operates supermarket fuel centers, which are a natural addition to one-stop-shopping strategy.