Denox Environmental & Technology Holdings Limited is an investment holding company that designs, develops, manufactures, and sells DeNOx catalysts in the People's Republic of China, Southeast Asia, and Europe. Its products include plate-type DeNOx catalysts, honey-comb DeNOx catalysts, and DeNOx catalysts for vehicles. The company sells its plate-type and honey-comb DeNOx catalysts to coal-fired power plants, engineering, procurement, and construction services providers, and boiler manufacturers, and it also distributes and sells chemical products. Founded in 2010, it is headquartered in Fengtai, the People's Republic of China.