... temperature,long-term durabilityperformance,etc.Carrier volume:Based on the basic parameters of vehicle engine.Cell density of ... is a metal or ceramic honeycomb substrate,on the surfaceof the substrate,coated with the precious metals such as platinum,palladiuma ... vehicles emisstions controlsysterm,adopting ceremic honeycomb as the carrier, which coating the active oxide of rareearth complex cover,and ...