... steel shell and inside ceramic element coa Features:1) This component consists of an outside steel shell and inside ceramic element ... , Pd, and Rh2) When the exhaust is passing through the three-way catalytic converter, CO, HC, and NOx, the activity of gas ... , the three gases are turned into the non-toxic gas to purify exhaustInner packing:1pc/PE bagOuter packing:Carton + pallet Three Way Catalytic ...