ExxonMobil is an oil and gas company and energy provider. It operates in four segments: Upstream, Energy Products, Chemical Products, and Specialty Products. The Upstream segment focuses on exploring and producing crude oil and natural gas. The Energy Products segment manufactures and sells fuels, aromatics, and catalysts. The Chemical Products segment focuses on olefins, polyolefins, and intermediates. The Specialty Products segment specializes in finished lubricants, base stocks and waxes, synthetics, elastomers, and resins. ExxonMobil operates four brands: Esso, Exxon, Mobil, and ExxonMobil Chemical.