Calumet Specialty Products Partners, L.P., is a producer of specialty hydrocarbon products in North America. It operating segments include specialty products and fuel products. In its specialty products segment, it processes crude oil and other feedstocks into a range of customized lubricating oils, white mineral oils, solvents, petrolatums and waxes, sold to domestic and international customers who purchase them as raw material components for basic industrial, consumer and automotive goods. In its fuel products segment, it processes crude oil into a range of fuel and fuel-related products, including gasoline, diesel, jet fuel, asphalt and heavy fuel oils, also reselling purchased crude oil to third party customers. Its subsidiaries include Kurlin Company, Bel-Ray Company Pty Limited, Weld Corporation, Bel-Ray Company, LLC, Calumet North Dakota, LLC, S&S International Mining Enterprises, Inc., Calumet Packaging, LLC, and Royal Purple, among others.