We are pleased to announce the launch of our latest brochure, showcasing our advanced retrofit emission solution for the London Black Cab (TX4).
Designed to support taxi operators navigating increasingly stringent emissions regulations, the new brochure highlights how existing Euro 5 TX4 vehicles can be upgraded to meet Euro 6 emissions standards—helping extend vehicle life while improving air quality. All approved by Transport for London (TfL).
To learn more about our TX4 Euro 6 retrofit solution, download the full brochure here:
https://hjs-emission.co.uk/wp-content/uploads/2026/05/26-03-5435-TX-4-TAXI_web-final-brochure-1.pdf