Niterra Co., Ltd.

Based in Nagoya, Japan, NGK Spark Plug Co., Ltd., along with its subsidiaries, specializes in the production and distribution of spark plugs and related components for internal-combustion engines, in addition to advanced technical ceramic products. Its comprehensive product portfolio encompasses a variety of spark plugs, catering to both the original equipment and aftermarket sectors, alongside igniter plugs, resistor cables, and covers. The company also supplies ceramic and metal glow plugs, complete with their controllers. Furthermore, it develops and provides a suite of sensors, such as those for oxygen, NOx, temperature, and knock detection. Beyond engine components, NGK Spark Plug extends its offerings to semiconductor packaging and substrates, including integrated circuit (IC) packages crucial for electronics and smart devices, and specialized parts for semiconductor manufacturing. Additionally, it produces various medical products. A significant part of its business involves fine ceramics, encompassing durable wear-resistant components, ultrasonic transducers and sensors, essential parts for semiconductor fabrication machinery, electrical equipment components, and other bespoke ceramic items. The company's industrial tool division manufactures cutting instruments crafted from materials like ceramic, cermet, micro-grain carbide, coated carbide, and cubic boron nitride (CBN), alongside high-speed steel (HSS) and various rotational tools. Its product lines are marketed under distinct brands: NGK is reserved for spark and glow plugs, while the NTK brand covers sensors, semiconductor packages/substrates, cutting tools, and fine ceramic solutions. Established in 1936, NGK Spark Plug Co., Ltd. maintains its primary corporate office in Nagoya, Japan.