Idemitsu Kosan Co., Ltd. is a Japanese integrated energy and chemical company and one of the country’s largest oil refiners and fuel marketers. Headquartered in Tokyo, it operates refining, petrochemical, and lubricant manufacturing assets in Japan and supports an international sales and supply network serving industrial and consumer markets.
The company’s chemical portfolio spans basic chemicals (such as olefins, aromatics, and solvents), downstream polymers and performance materials, electronic materials including OLED components, and a global lubricants and base-oils business. Idemitsu supplies key feedstocks for plastics and synthetic fibers, as well as asphalt and specialty chemicals used in automotive, electronics, and packaging applications. The company also pursues initiatives in recycling, bio-based materials, and lower-carbon energy solutions alongside efficiency and emissions-reduction projects in refining and petrochemicals.
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Idemitsu.
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