Calumet Penreco produces a range of white mineral oils and natural sulfonates. It is operated by Calumet Specialty Products Partners, which is one of the leading, independent refiners and processors of specialty hydrocarbon products in the world. Calumet Specialty Products Partners maintains more than five plants in northwestern Louisiana, Pennsylvania, Texas and Illinois. Its product line includes naphthenic and paraffinic oils, aliphatic solvents, petroleum waxes, and petrolatum and hydrocarbon gels. The company serves clients in the East Coast and upper Midwest regions of the United States and Canada. It offers product storage and oil production services.