Phillips 66 is an energy manufacturing and logistics company. It operates through four segments: Midstream, Chemicals, Refining, and Marketing and Specialties. The Midstream segment processes, transports, stores, and markets crude oil, refined petroleum products, natural gas, and natural gas liquids. The Chemicals segment manufactures and markets ethylene and other olefin products, aromatics products, such as benzene, styrene, paraxylene, and cyclohexane, as well as polystyrene and styrene-butadiene copolymers, and various specialty chemical products, including organosulfur, solvents, catalysts, drilling, and mining chemicals. The Refining segment buys, sells, and refines crude oil and other feedstocks into petroleum products comprising gasoline, distillates, and aviation fuels at refineries. The Marketing and Specialties segment purchases for resale and markets refined petroleum products and renewable fuels and also manufactures and sells specialty products, such as base oils and lubricants.