Niterra, formerly known as NGK SPARK PLUG Co., Ltd., is a Japan-based manufacturer specializing in advanced ceramic technologies and automotive components. The company’s core product lines include spark plugs, ceramic substrates, oxygen sensors and other precision components designed to optimize engine performance and reduce emissions. In addition to traditional ignition products, Niterra produces substrates for catalytic converters, diesel particulate filters and a growing range of fuel-cell and hydrogen-related components.
Beyond its automotive focus, Niterra’s ceramics business supplies materials for industrial applications such as semiconductor manufacturing, electronics and environmental systems. Leveraging proprietary fine-ceramics expertise, the company develops high-performance insulators, substrates and filters that serve power generation, water treatment and precision machinery sectors. Niterra also pursues research into solid-oxide fuel cells and other clean-energy technologies.
Headquartered in Nagoya, Japan, Niterra operates a global network of manufacturing facilities, technical centers and sales offices across Asia, Europe and the Americas. Its products are marketed to both original equipment manufacturers (OEMs) and aftermarket distributors in key automotive markets, while ceramics and energy-related components support industrial customers worldwide.
Founded in 1936, the company has evolved from its origins as a spark-plug specialist into a diversified technology provider. In October 2023, it adopted the “Niterra” name to reflect a broader commitment to clean atmosphere, energy and mobility solutions. The company is led by President and CEO Koichiro Yokozawa, under whose direction Niterra continues to expand its research initiatives and global reach.
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