c. 112k
additional tonnes of NOx removed from tailpipes by JM's catalytic converters in 2024/25
20+ years'
experience developing fuel cell technologies globally
Our global transport system is going through its biggest transition in decades. Air pollution kills millions of people every year and the majority of the world鈥檚 population are continually exposed to poor air quality.
With increasing urbanisation, tightening air quality regulations are pushing the automotive industry to build cleaner engines and use more sustainable fuels, to reduce harmful emissions from transport.
That鈥檚 where JM comes in.

Cleaner air for all
Today, our emission control technologies are used in hundreds of millions of cars, buses and trucks around the world. Our catalysts and filters prevent millions of tonnes of harmful pollutants, like nitrogen oxides and particulates produced by gasoline and diesel engines, from entering the air. The end result is fewer harmful emissions from transport so everyone across the globe can breathe cleaner air.
While road transportation progressively shifts towards electric powertrains, internal combustion vehicles will remain a reality for years to come, including for economies that cannot yet afford high-cost low carbon solutions and infrastructure.
Significant action is still needed to reduce harmful emissions in the atmosphere, which kill millions of people every year. JM is smartly investing and innovating with a strong capital discipline to ensure our autocatalysts continue to meet evolving legislation and customer needs. Our emission control technologies are also effective in many other applications, such as generators for data centres, shipping, and power generation.
The clean power of hydrogen
Electric vehicles will be a major part of the future of transport. While batteries are more suited to light duty cars and vans, hydrogen fuel cell vehicles are critical to decarbonising heavy duty trucks and buses, offering longer driving ranges and faster refuelling times.
Inside a fuel cell vehicle, hydrogen is used as a fuel to generate electricity to power the motor, producing water as the only by-product. At JM, we design and manufacture the performance-driving components at the heart of a fuel cell. These catalyst-coated membranes and membrane electrode assemblies are founded in our decades of expertise in metals chemistry and catalysis. In fact, in the 1960s, we supplied NASA with the electrocatalysts for the fuel cells that powered the on-board systems during the Apollo space missions.
Today, our focus is firmly back on Earth and our fuel cell technologies are helping vehicles run on the clean power of hydrogen.