Resonac (OTCMKTS:SHWDY) Corporation (OTCMKTS: SHWDY), formerly known as Showa Denko K.K., is a diversified chemical manufacturer based in Tokyo, Japan. The company produces a broad range of industrial chemicals and performance materials that serve sectors including automotive, electronics, energy storage and environmental applications. Its product portfolio encompasses basic petrochemicals, polyolefins, functional chemicals, ceramic powders, aluminum specialty products and graphite electrodes for steel production.
Resonac maintains a strong presence in the electronics materials market through its supply of semiconductor‐grade silicon, silicon wafers, rare‐earth magnetic alloys and high‐purity gases and chemicals used in semiconductor fabrication. In the battery materials segment, the company manufactures electrolytes and cathode materials for lithium‐ion batteries, catering to global producers of electric vehicles and consumer electronics. Its performance materials division, meanwhile, offers ceramic substrates, heat‐dissipating components and advanced lubricants for industrial machinery and automotive applications.
Originally established in 1939 through the merger of two Japanese chemical firms, the company operated under the Showa Denko name for more than eight decades before adopting the Resonac brand in October 2023. Headquartered in Tokyo, Resonac conducts operations worldwide with production sites and sales offices across Asia, Europe and North America. The company is governed by a board of directors and executive team with extensive experience in specialty chemicals and materials science, maintaining research and development centers to drive innovation and support its global customer base.
