... of Pt, Pd, and Rh2) When the exhaust is passing through the three-way catalytic converter, CO, HC, and NOx, the activity ... and CO2; finally the NOx is deoxidized into nitrogen, the three gases are turned into the non-toxic gas to purify ... exhaustInner packing:1pc/PE bagOuter packing:Carton + pallet Three Way Catalytic Converter