Resonac Corporation is a Japan-based global materials and chemicals manufacturer and the core operating company of the Resonac Group. It was created through the integration of Showa Denko K.K. and Showa Denko Materials (formerly Hitachi Chemical), unified under the Resonac brand in 2023. Headquartered in Tokyo, the company focuses on advanced materials for high‑tech and industrial markets.
Resonac’s portfolio spans semiconductor and electronic materials (including packaging and process materials), mobility and industrial polymers, battery and energy materials, carbon products such as graphite electrodes, and specialty inorganic and ceramic materials. Its technologies support applications across semiconductor fabrication and packaging, automotive, energy, and general industrial sectors. The company operates R&D, manufacturing, and customer support sites across Japan, Asia, the Americas, and Europe, and is part of the Resonac Holdings group listed on the Tokyo Stock Exchange.
Also known as Showa Denko.
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Shifting from commodity petrochemicals, the company invests in specialty materials, hydrogen, and semiconductor solutions, while enhancing financial stability through strategic divestments.
