Niterra Co.,Ltd.

Niterra Co., Ltd. manufactures and sells spark plugs and related products for internal-combustion engines and technical ceramics in Japan and internationally. Its offerings include spark plugs for aftermarket and original equipment, igniter plugs, resistor cables and covers, glow plugs and controllers, and oxygen, NOx, temperature, and knock sensors. The company also provides semiconductor packages, semiconductor manufacturing parts, medical products, fine ceramics, bearing balls, piezoelectric ceramics, industrial ceramics, cutting tools, and the Sumikaze sterilization deodorizer. It sells spark and glow plugs under the NGK brand and sensors, semiconductor packages/substrates, cutting tools, oxygen concentrators, and piezoelectric and fine ceramics under the NTK brand. Formerly known as NGK Spark Plug Co., Ltd., it changed its name to Niterra Co., Ltd. in April 2023. Founded in 1936, it is headquartered in Nagoya, Japan.