Calumet Specialty Products Partners L.P., based in Indianapolis, Indiana since 1916, specializes in manufacturing and marketing a diverse range of specialty products. These include solvents, waxes, lubricating oils, and more, catering to consumer and industrial markets globally. The company also ventures into renewable energy, producing sustainable fuels like renewable diesel and aviation fuel from renewable feedstocks. Additionally, Calumet owns high-performance brands such as Royal Purple, Bel-Ray, and TruFuel, known for their quality automotive and industrial lubricants and fuels.