... vehicle,100-600cpsi,various size,coated with noble metals Ceramic Block For VehicleThe ceramic substrate is made of cordierite, and ... Rh and ceramic element without noble metals.The cordierite ceramic block are used for car catalytic converter. The cells density ... , Italy.etc.,and Received by customers.Features Specifications:ceramic block use in vehicle (mm)Litre400cells/per square inchround shapeφ150 ...