Niterra Co., Ltd. engages in the manufacture and sale of spark plugs, technical ceramics, and related products for internal combustion engines. The company is headquartered in Nagoya, Aichi-Ken and currently employs 15,644 full-time employees. The firm has three business segments. The Automobile-related segment is engaged in the manufacture and sale of parts that are mainly assembled into automobiles, such as spark plugs and exhaust gas sensors. The Ceramics segment manufactures and sells cutting tools, industrial equipment components, semiconductor manufacturing equipment components, semiconductor packages, and oxygen concentrators for medical use. The New Business segment is engaged in the manufacture and sale of products related to new businesses such as the environmental energy field. The company also sells materials and provides welfare services.