Innovation right from the beginning.
Jointly with manufacturers, HJS finds solutions for the emission requirements of the future. As system vendors for exhaust gas treatment, we possess product development competencies for diesel, spark ignition and gas engines, extended by a comprehensive application competence for on-highway and off-highway applications. Certified according to all usual regulatory specifications, we offer verified OE series competence. Our know-how is based on 40 years’ experience in product development of exhaust gas technology and emission reduction.