With the increasingly strict national environmental protection policies, nitrogen oxide emission reduction has entered the deep water zone。In addition to the medium and low temperature denitrification in the traditional industry, there has been a high temperature denitrification industry characterized by distributed energy, and the exhaust gas temperature of the industry is generally above 420 ° C, which poses new challenges to the use of conventional medium-temperature catalysts。On the basis of full understanding of the industry, our company has formed a high-temperature catalyst formula with company characteristics through continuous testing, and has achieved mass production。