honeycomb ceramic catalyst EuroII ,III, IV,EPA and CARB standard 300,400,600 CPSI,various shapes Honeycomb Ceramic (Used In Vehicle)The ceramic substrate is made of cordierite, and it is used for car catalytic converter. The cells density can be 100 cpsi, 300 cpsi ,400 cpsi or 600 cpsi. The shape will be round, oval or racetrack. We can supply both ceramic element coated with noble metals of Pt, ...