Nitrogen oxide limits pull copper chabazite onto every engine
The United States heavy-duty rule taking effect from 2027 cuts permitted nitrogen oxide to a fraction of current limits, and it demands that performance across low-load cycles where an exhaust system barely reaches operating temperature. Copper-exchanged chabazite is the only framework that converts efficiently in that window while surviving filter regeneration above 850 degrees Celsius. Euro 7 pushes the same direction on a different timetable. Growth at 10.5% follows regulation rather than vehicle volume, which makes it forecastable in a way most catalyst demand is not. Engine families certify once and the framework stays for the programme life.
Market Impact: Adds 30% of global value








