Idemitsu Kosan Co., Ltd. is a Japanese company primarily engaged in the oil and energy sector. Founded in 1911 by Sazo Idemitsu, the company is known for its production and distribution of petroleum products, including gasoline, diesel, and lubricants. It operates refineries and has a significant presence in both domestic and international markets. In addition to its core oil business, Idemitsu is involved in various other sectors, such as renewable energy and petrochemicals. The company emphasizes sustainability and innovation, aiming to reduce its environmental impact while meeting the energy needs of consumers and industries worldwide.