Development of after-treatment systems for Industrial application has been critical in last decades, where worldwide regulations have been tightened. In this study a technical and economical analysis of the zone coating technology for the three-way catalyst has been conducted in Iveco group FPT Industrial ATS Purchasing team, in order to develop after-treatment solutions for CNG heavy-duty engines. The need to be compliant with more stringent environmental regulations must be matched with cost reduction activities pursuing due to recent years increase of catalyst PGM market prices. FPT Industrial position and its ATS Platform workflow strategy is crucial, in a scenario of new technologies phase-in (Battery Electric vehicles and Fuel-Cell Electric Vehicles) and emissions regulations improvement.