Denox Environmental & Technology Holdings Ltd is a China-based firm. The company is mainly engaged in the development and production of products related to air pollution control. Its main product is plate-type DeNOx catalysts, honey-comb DeNOx catalysts and DeNOx catalysts for diesel-powered vehicles. In addition, the company is also engaged in the provision of environmental protection consulting services in the People's Republic of China. Most of its revenue is earned from sales of its product Denox catalyst.