We promote business activities in harmony
with the earth's environment
to help realize a sustainable society.

Contributing to the environment and society through our products

Our corporate philosophy calls for "Providing Products that Contribute to a Better Social Environment." As such, contributing to the environment through our products and carrying out eco-friendly manufacturing are among our most important initiatives.

HONEYCERAMHONEYCERAM is a ceramic substrate for catalytic converters to purify harmful contents in the exhaust of automobiles.
It is currently manufactured in eight countries around the world, with total shipments of around 1.5 billion units.
Diesel particulate filters (DPFs)The DPF is a porous ceramic filter used worldwide in the exhaust systems of diesel vehicles.
Particulate matter (PM) is reliably captured by the filter's micropores, purifying the exhaust emitted from diesel vehicles.
Gasoline Particulate Filters (GPF)GPFs are ceramic filters that remove particulate matter (PM) from the exhaust of gasoline-powered vehicles. GPFs achieve high performance (capture more PM) and low-pressure loss (lower fuel costs and higher output) at the same time through the use of our proprietary micropore creation and control technologies. In 2012, we became the first company in the world to commercialize GPF technology.
NOx SensorsNGK developed the world's first in-vehicle sensor to measure concentrations of nitrogen oxides (NOx) in exhaust in real time with high precision. Specifically, the sensor is capable of measuring NOx concentration at the parts per million (ppm) level and can thus detect even very small amounts of the noxious substance.
NAS batteriesNGK was the world's first manufacturer to commercialize the NAS battery megawatt-class storage system. These systems support the proliferation of renewable energy, thereby contributing to the fight against global warming.
Low-level radioactive waste treatment systemsDeveloped using NGK's proprietary incineration technology and exhaust dust filtration technology, these systems are delivered to nuclear power-related facilities across Japan to safely treat low-level radioactive waste.
Wavelength-control drying systemsBy performing selective irradiation with specific wavelengths of light, this system is able to dry products at a low temperature (approximately 40°C) to control heat damage, thereby contributing to improved product quality and productivity.
Gallium Nitride (GaN) WafersThanks to NGK's original crystal growth method, applications for light sources are expected, such as low-defect density gallium nitride (GaN) covering the entire wafer and stadium lighting among others.
Micro-Lenses for Ultraviolet LEDsMicro-lenses are pieces of transparent quartz glass used in UV LEDs for sterilization and are expected to replace mercury lamps. Micro-lenses for UV LEDs are characterized by a cavity that holds a UV LED chip, a feature that improves UV LED efficiency and lowers costs.

Aiming to be a corporate citizen that contributes to a better social environment

As we aim to realize our corporate philosophy, the NGK Group strives to build and maintain trusting relationships by communicating with diverse stakeholders and taking an interest in social issues in each country and region.

NGK Foundation for International StudentsDeveloping human resources capable of contributing to the progress of the international community
Signed on to the UN Global Compact
Balancing between CO2 reductions and comfortable working environmentsThe Nagoya Office's administration/welfare building chosen as a Leading Project in Sustainable Construction (for Leadership in CO2 Reduction)Learn more
(NGK - Corporate Site)