The Gasoline Particulate Filter (GPF) uses honeycomb ceramics as its core substrate. Leveraging its precise porous structure, it efficiently traps particulate matter (PM) generated during gasoline engine operation. When PM accumulates to a certain level, it can be regenerated via exhaust gas heat or active heating, oxidizing the particles into harmless gases. This continuously maintains the PM capture and purification capabilities of the system.

Integrated exhaust aftertreatment systems (such as combined TWC+GPF solutions) utilize the excellent compatibility of honeycomb ceramic substrates. These systems first purify gaseous pollutants via TWC, then capture PM via GPF, forming a full-process treatment chain of "gaseous pollutant purification + PM capture." This fully meets the multi-dimensional purification requirements imposed by stringent emission regulations on gasoline engine exhaust.