Honeycomb Ceramic is used for car catalytic converter . while CO,HC,and NOx go through catalytic converter made of multi-hole cordierite catalyst honeycomb carrier, it make the gases more active and do oxide-reducing chemical reaction. The poisonous gases are made into innocuous gas. Then no color no poison CO2, H2O and nitrogen gas be transmit to air, and the economical sloss of vehicle power get reduce.