Catalyst with high stability of perovskite materials, rare earth oxygen storage materials and precious metals (Pt/Rh/Pd) composite load, through the special coating technology to the metal substrate surface preparation. It has completely transformed lower temperature, catalyst coating evenly, no rust, good heat resistance, firm and not fall off. Catalyst can effectively eliminate the machine tail gas CO, HC and NOx pests, such as excellent catalytic performance and durability performance can meet the Ⅲ and over discharge standard and durability requirements.
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