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HJS Emission Technology
HJS Emission Technology GmbH & Co. KG has many years of experience and expertise in the field of automotive exhaust gas after treatment. Approximately 450 skilled employees are engaged in the development, production and marketing of modular systems for reducing pollutant emissions. Our innovative environmental protection technologies can be used either as original equipment or for retrofitting in buses, coaches, passenger cars, commercial vehicles and a wide range of construction equipment applications. HJS specialises in systems for diesel engines especially for reducing the emissions of soot particles (PM) and nitrogen oxides (NOx). All HJS systems meet UK Ultra Low Emission Zone and Clean Air Zone requirements and are certified and approved at Millbrook Proving ground in accordance with authority requirements.
HJS are based in Menden in Central Germany with a dedicated UK support and technical facility operating in Bracknell, Berkshire. We have firmly established relationships with some of the UK’s largest bus operators and we offer them a cost effective way of complying with the Ultra Low Emission Zone (ULEZ) and Clean Air Zones without having to purchase new vehicles.