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Niterra
at a Glance ​
​

  • Around the car engine

    Spark plugs and exhaust gas sensors create optimal combustion conditions.
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  • For semiconductor manufacturing processes

    Wafer chucks: Essential for manufacturing semiconductors used in smartphones, cameras, cars, and countless everyday products.
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    ​    Wafer chucks: Essential for manufacturing semiconductors used in smartphones, cameras, cars, and countless everyday products.
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    ​

  • Also for water quality sensing

    Supporting sustainable aquaculture through sensing technologySupporting sustainable
    aquaculture through
    sensing technology

About UsAbout Niterra Group

Niterra leverages its core ceramic technologies—spanning materials, molding, sintering, and sensing—to drive advancements across diverse sectors such as mobility, semiconductors, and environment & energy.
​

Invisible TechnologyinProfessionals

An illustration of a city where Niterra Group products are used. NGK SPARK PLUGSNTK TECHNICAL CERAMICS

Spark Plug

In internal combustion engines, such as engines, this device acts as a "lighter," electrically igniting the gasoline-air mixture. Our spark plugs were the first domestically produced in Japan, and we now hold the No. 1 market share worldwide.

Igniter Plug

These plugs are used in specialized applications such as rockets and gas turbines. They are designed to withstand harsh environments including high voltage, high temperature, and high-pressure gases.

Exhaust Gas Sensor

This is a central component in automobiles that senses the state of exhaust gases to ensure the engine operates safely and efficiently. It contributes to detecting engine abnormalities, cleaning exhaust gases, and improving fuel efficiency.

Semiconductor Packages

These ceramic packages for semiconductors protect and connect the semiconductors that power society. Their exceptional environmental resistance and unique lamination, processing, and circuitry technologies enable reliable electrical signal transmission even under harsh conditions.

Wafer Chuck

These are high-precision components used to fix silicon wafers, which form the base material, in the semiconductor manufacturing process. Ceramics, which offer excellent wear resistance and corrosion resistance in harsh environments, are used in their production.

Ceramic Ball for Bearing

These bearing balls are made of silicon nitride, which is lightweight and possesses excellent mechanical properties such as high strength, high rigidity, and wear resistance. They are used in bearings in a wide range of fields, including electric vehicle motors.

Heat Dissipation Substrate

This substrate features high strength and heat dissipation, achieved by increasing the thermal conductivity of silicon nitride, a material commonly used in structural components, to 90 W/m·K. It is used in power semiconductor modules, inverters, converters, and other applications.

SOEC(Solid Oxide Water Electrolysis Cell)

This is a SOEC (Solid Oxide Electrolytic Cell) that produces hydrogen with high efficiency through steam electrolysis. As a highly efficient and durable steam electrolysis technology, it is used in industrial applications such as steel, chemical, and e-fuel.

Water Quality Sensing

We visualize seawater quality information using sensing technology, data analysis technology, and IoT technology. Furthermore, by digitizing and standardizing know-how for water quality management and aquaculture operations, we are working to provide a total land-based aquaculture solution that anyone can operate stably.

Strengths of Niterra Group Our Strengths

Advanced Technical Capabilities and a Global Network

Our strengths lie in our advanced technological capabilities, cultivated with ceramics at their core, and the global network we have built through the sale of spark plugs.
We will continue to refine our core technologies, drive technological innovation, and address our customers' challenges.

Leveraging the properties of ceramics to create new parts and products / Utilizing core assets in gas sensing cultivated in the internal combustion engine business / Leveraging global automotive customers and sales channels

Niterra Group in Numbers By the Numbers

echnological strength supporting the world, driven by steady growth
Here's a look at the current state of the Niterra Group, as seen through the numbers.

To become a companythat brightens the Earth

Consolidated Sales Revenue
731.2 billion yen
Overseas sales ratio
81%
Establishment
1936​(90th anniversary of founding)
Consolidated number of employees
15,698 ​
Number of location
Domestic30​Overseas58​
*Our estimate as of the end of March 2025
*Our estimate as of the end of March 2025

As of the end of March 2026

What Niterra Group ValueOur Values

The Niterra Way​

Niterra has newly set the values to be shared across the company by reviewing and outlining the ideas that have been valued since the founding of Morimura Gumi, from which the Morimura Group originated. By never straying from the values passed down through the generations and reaffirming the role that we are committed to fulfill, we will continue to make steady progress.

The Niterra Way refers to a set of philosophies that
includes values that are shared by the entire Niterra Group, 
and the actions based on those philosophies, as well as the manner in which those actions are carried out.

Dokuritsu-JieiDemonstrate a commitment to taking ownership—trusting in your own capabilities without relying on others.
Soshi-KantetsuHave cherished desire, and carry it through till the end.
​Shisei-ShinjitsuEmbody the highest levels of sincerity, honesty, and authenticity—free from deception or pretense.
Shikai-KeiteiConduct business that contributes to global peace and shared prosperity.

The Niterra Group's shared values,
all employees commit to sharing 
and passing down to the next generations.