NGK Spark Plug Co., Ltd., together with its subsidiaries, manufactures and sells spark plugs and related products for internal-combustion engines; and technical ceramics and applicable products in Japan. It offers spark plugs, including plugs for aftermarket and original equipment, igniter plugs, and resister cables and covers; glow plugs comprising ceramic and metal type glow plugs, and glow controllers; and oxygen, NOx, temperature, and knock sensors. The company also provides semiconductor components, such as IC packages for electronics and smart devices, as well as manufacturing parts for semiconductors; and medical products. In addition, it offers fine ceramics, including wear-resistant parts, ultrasonic transducers and sensors, products for semiconductor manufacturing equipment, electric equipment products, and other ceramic products. Further, the company provides cutting tools comprising ceramic, cermet, micro grain carbide, coated carbide, and cubic boron nitride grades, as well as SS and rotational tools. It sells its spark and glow plugs under NGK brand; and sensors, semiconductor packages/substrates, cutting tools, and fine ceramics under NTK brand. The company was founded in 1936 and is headquartered in Nagoya, Japan.
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