Niterra Co., Ltd., formerly known as NGK Spark Plug Co., Ltd., is a Japan-based manufacturer of automotive components and advanced ceramic products. The company changed its corporate name to Niterra in 2023 to reflect its broader business portfolio beyond spark plugs.
Niterra’s automotive business develops and supplies spark plugs, glow plugs, ignition components, and automotive sensors, including products used in engine management and emissions-control systems. Its products are sold to vehicle manufacturers and the global automotive aftermarket.
The company also operates a technical ceramics business serving industries such as semiconductors, electronics, communications, industrial equipment, and healthcare. Its offerings include ceramic components, semiconductor-related products, cutting tools, and medical products. Headquartered in Nagoya, Japan, Niterra serves customers internationally through operations and sales networks across Japan and overseas markets.
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