You might say a steady diet of red meat has made this company big and strong. OSI Group is one of the largest suppliers of meat products to US foodservice operators. Through its operating companies, OSI boasts a bulging menu of products that includes a variety of beef, pork, and poultry items, such as beef patties, hot dogs, sausages, bacon, and chicken nuggets. The company enjoys a longtime relationship with #1 fast-food chain McDonald's as its beef supplier. As part of its business, OSI also offers other food processors services such as contract manufacturing, packaging, and supply chain management. It has more than 60 production facilities in 16 countries.