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Calumet Specialty Products Partners is a master limited partnership that operates specialty petroleum products refineries and produces high-quality lubricating oils, solvents, waxes, packaged and synthetic lubricants, and other specialty hydrocarbon products. The company serves diverse end markets including automotive, industrial, metalworking, mining, and rail industries through its network of refineries and production facilities located primarily in the United States. Calumet focuses on converting crude oil and other feedstocks into specialized products that command premium pricing compared to traditional refined petroleum products.