QCS Purchasing LLC is a buying organization servicing more than 400 locations within its owner communities: SECO/Golden 100, Deland, Fla., Quality Chekd Dairies, Naperville, Ill., and Allied Purchasing, Mason City, Iowa. The combined company has been in operation since 2001 and was incorporated as QCS in early 2005. Since its inception, the organization has virtually doubled its purchasing volumes by leveraging its membership scale as well as creating innovative programs for its owners.