ORANGE, Calif.--(BUSINESS WIRE)--SAS Retail Services, a leading provider of in store merchandising services for Retailers and Consumer Brands nationally, was selected as one of only five Preferred Service Providers (PSPs) by retail giant, Walmart. The new Preferred Service Program is part of the new Walmart Merchandising Service Program that will centralize work in nearly 5,000 Walmart stores. The focus will drive higher sales, lowering costs, increasing efficiencies, and improve the customer e