Darling International is one of the leading providers of rendering, recycling and recovery solutions to the food industry in the United States. The public company operates a network of facilities throughout the U.S. It recycles used restaurant cooking oil and byproducts from the beef, pork and poultry processing industries to produce protein meals, fats and hides. In addition, Darling International maintains a service center that caters to the needs of customers 24 hours a day, seven days a week. The company serves chemical and leather manufacturers worldwide. It also sells a range of equipment to restaurants and offers grease trap collection services. Darling International provides used oil storage systems under the Cleanstar brand.