As a medium-sized company based in Menden/Sauerland, HJS Emission Technology GmbH & Co. KG stands for many years of experience and expertise in the field of exhaust gas aftertreatment. Around 350 employees develop, manufacture and market modular systems for reducing pollutant emissions. The innovative environmental protection technologies are used both as original equipment and for retrofitting in passenger cars, light to heavy commercial vehicles and in mobile and stationary applications in the non-road sector. In addition to systems for petrol engines, HJS today primarily offers solutions for diesel engines – especially for the reduction of soot particles and nitrogen oxides. With extensive patent rights for DPF® (Diesel Particulate Filter) and SCRT® (Selective Catalytic Reduction Technology), HJS sets national and global standards. The company’s latest development is the NOx system, SCRT®TM with active thermal management, for which a patent application has also been filed.