Catalyst is a compound catalyst with rare earth element precious metal. Our catalyst is coated with noble metals of PT, Pd, Rh, When the exhaust is passing through the three- Way catalyst, The CO would be oxidized into CO2, The HC is turned into H2O and CO2, And the NOX is deoxidized into nitrogen. It is suitable for the purification of all kinds of automobile and industrial waste gas exhaust. Metal carrier catalysts are made in metal honeycomb carrier with stainless steel crust and Fe- Cr- Al core made, It is widely used in motorcycles and off- Road engines. Specifications: Φ 35x100, Φ 35x70, Φ 35x60, Φ 28x100, Φ 28x60, Φ 35x40, Φ 35x30, Φ 42x100 etc. 1)Diameter: From 20mm to 72mm 2)Length: From 30mm to 100mm 3)Density: 100cpsi, 200cpsi, 300cpsi and 400cpsi 4)Shape: Columned