

Eco Products
Based on distinctive technology, the NGK Group has brought the world ceramic products that support automobile exhaust purification and many other products that contribute to a better environment. At the same time, the Group is meeting the challenge of tackling new technology fields. In these ways, we continue to contribute to society and the environment on a global scale.
The NGK Group produces and supplies automakers worldwide with HONEYCERAM. This honeycomb ceramic substrate contains catalysts that render nitrogen oxides (NOx), carbon monoxide, hydrocarbons, and other potentially harmful substances found in gasoline vehicle exhaust harmless.
In order to clear stricter exhaust regulations worldwide, the NGK Group is leveraging its distinctive technologies in a bid to continue contributing to improved exhaust purification performance. The result is the creation of thinner cell walls for HONEYCERAM, allowing the Group to deliver a lighter product with a larger number of cells, leading to more surface area for catalytic reactions.
Restrictions on exhaust from diesel engines found in buses, trucks, cars and other vehicles have grown progressively tighter particularly in Japan, Europe and the United States.
By further refining ceramic material, forming and firing technologies honed over the years, the NGK Group develops and produces diesel particulate filters (DPFs) that capture over 90% of the particulate matter (PM) found in diesel exhaust. The Group is also responding to the latest changes in tough exhaust restrictions.
The NGK Group is supporting the spread of clean diesel vehicles as the only manufacturer in the world that mass produces both cordierite DPFs, primarily used in trucks, buses, and specialized construction and agricultural vehicles, and silicon carbide (SiC) DPFs, used mainly in cars.
The world’s first product capable of highly precise measurement of nitrogen oxide (NOx) concentrations at the ppm level.
Maximizes utilization of renewable energy by enabling the storage of large amounts of electric power.
This high-performance kiln saves both labor and energy through precise temperature control.
These translucent, durable ceramics are used in energy-saving lighting fixtures