Johnson Matthey is a leading supplier of retrofit diesel emissions control systems for non-road machines.
Johnson Matthey's CRT® technology is the leading NRMM retrofit filter system.
We have many application-specific designs and can provide detailed installation advice.
Johnson Matthey systems are certified for supply by BAFU (Switzerland), EST (UK) and VERT. Also accepted by TRGS544 for local schemes in Germany and Austria.
Visit our library to see case studies of typical retrofit installations.
Diesel engines are a valuable power source but their emissions are known to contribute to air pollution and can cause respiratory health problems. For existing machines these emissions are best dealt with at source through the use of retrofit exhaust aftertreatment.
Johnson Matthey’s European Non-Road Mobile Machinery (NRMM) Group focuses on the manufacture, sale and service of retrofit systems for a broad range of vehicles and machine types: Construction, Mining & Tunnelling, Materials Handling, Agriculture, Recycling, Railway and Generators & Compressors.
The European Non-Road Mobile Machinery Group is part of Johnson Matthey’s Emission Control Technologies (ECT).