1.universal catalytic converter, 2.reduce pollutants more than 97% 3.coated catalyst (Pt, Pd,Rh+rare earth ... Function: reduce hamful emmision( CO,CH, NOx) from motor vehcle more than 97%; 5. Certification in over 58 countries,meet the ... is welcome. Specification in common use:DiameterLength100-130mmless than 400mm130-150mmless than 400mm150-230mm430-550mmSpecification can be customerlized, as the the ...