NGK Insulators, Ltd.

NGK—formerly NGK Insulators, with the company name changed to NGK Corporation (NGK株式会社) in 2026-4 (April)—is a manufacturer centered on ceramic technology and focused on the environment and energy sectors. It began with power transmission insulators (gaishi), but its main businesses now include ceramics for automotive exhaust purification such as HONEYCERAM, DPFs, and NOx sensors, where it holds a world-leading share; large-capacity NAS batteries; ceramics for semiconductor manufacturing equipment; and industrial machinery. Products that contribute to the environment account for approximately 60% of revenue, making NGK a global company that supports the environment and energy sectors through ceramic technology, with production and sales across 17 countries.