... catalytic converter Quick Detailscordierite substrate, less precious metal coating, used for diesel car, past euro 3,4, 5,EPA, CARB. ... suitable for cars in all types and can meet the emission standard Euro2,3,4, EPA and CARB. Our quality management system ... metals such as platinum, palladium and rhodium, which are used for purifying of unburned hydrocarbons (HC) , carbon monoxide (CO) , and oxides ...