Idemitsu Kosan Co., Ltd., commonly known as Idemitsu, is a Japanese petroleum and chemical company. It was founded in 1911 by Sazo Idemitsu and has its headquarters in Chiyoda, Tokyo, Japan. Idemitsu began as a small oil distributor and expanded its operations over the years.

In the 1930s, the company started oil exploration activities in Japan, leading to the discovery of oil fields in Akita and Niigata. During World War II, Idemitsu played a significant role in supplying the Japanese military with petroleum and was heavily involved in oil refining and distribution. After the war, the company diversified its operations to include chemicals and other business segments.

Idemitsu's headquarters, located in Tokyo, serves as the nerve center of its global operations. It houses various departments, including corporate planning, finance, human resources, and research and development. The company's headquarters also includes research facilities and laboratories, focusing on the development of new technologies and products.

Idemitsu's main products and services revolve around the petroleum and chemical industries. The company is involved in crude oil exploration and production, oil refining, and the manufacturing and distribution of petroleum products, including gasoline, diesel, lubricants, and asphalt. It also produces and sells various chemical products, such as synthetic resins, additives, and industrial solvents.

On a global scale, Idemitsu has made significant expansions and collaborations. The company has established several subsidiaries and joint ventures in various countries, including the United States, China, Vietnam, and Indonesia. For example, Idemitsu has a joint venture with Mitsui Chemicals, known as Idemitsu Kosan-Mitsui Chemicals, which focuses on petrochemical production.

Additionally, in 2016, Idemitsu entered into a merger agreement with Showa Shell Sekiyu, forming a stronger market presence in Japan. In terms of market position, Idemitsu is one of the major players in the Japanese petroleum industry and has a significant market share. It competes with other major Japanese oil companies like JXTG Holdings and ENEOS Holdings, as well as multinational corporations such as ExxonMobil, Chevron, and Shell.

In recent years, Idemitsu has focused on sustainability and adopted strategies to reduce its environmental impact. The company has been investing in renewable energy sources and developing eco-friendly products. Moreover, it has actively engaged in research and development to improve operational efficiency and reduce carbon emissions.

As of the latest available information, Idemitsu continues to expand its global operations while maintaining its stronghold in the domestic petroleum market. The company remains committed to innovation and sustainability, positioning itself for future growth in the ever-evolving energy industry