About Us
Clean Air Technologies to reduce emissions for a Greener Tomorrow.
Leading clean air innovation since 1976. HJS UK develops cutting-edge exhaust technology for all vehicles. We partner with you to reduce emissions and meet air quality standards. Breathe easier, achieve your clean air goals and build a greener future together.
Press releases
TfL remain silent on policy changes threatening livelihoods of London...
In July this year, after a five-year project, Transport for London (TfL) finally approved the HJS emission upgrade for Euro 5 TX4 taxi’s to be... read more
17.12.2025 • By HJS Emission Technology UK
