Ceramic honeycomb also are typically used as the catalyst carrier for purifying automotive/vehicle emission (exhaust catalytic converter), removing bad smell (for instance, air-fresher machine for hotel, restaurant, toilet and so on), industrial organic waste gas purification, abatement of Volatile organic compounds (VOC), hazardous air pollutants (HAP), carbon monoxide (CO), nitrogen oxides (NOX), organic particulate matter (OPM), HC nytron, SO2, odors, and other air toxics in oil and chemical industry, dust burning stoves/incinerators, power plants and so on. They are also widely used in the application of Vehicle Catalytic oxidizers (CO), regenerative catalytic oxidizers (RCO), ReNOx processes, fixed bed adsorbers, Bio-systems.