ExxonMobil is a leading American multinational oil and gas corporation based in Spring, Texas. Formed in 1999 from the merger of Exxon and Mobil, the company has roots tracing back to John D. Rockefeller's Standard Oil Company, established in 1870. ExxonMobil ranks among the largest publicly traded petroleum and petrochemical companies globally, with operations in most countries. The company explores, produces, refines, and markets oil, natural gas, and petrochemicals. Its core products include fuels such as gasoline, diesel, and kerosene, as well as lubricants like Uniflo motor oil and synthetic engine oils. ExxonMobil also produces petrochemical building blocks used in consumer goods, including butyl rubber. The company has a history of innovation, with significant milestones in refining and product development, and it operates various refineries to support modern transportation and industry.