Cummins Emission Treatment System (China) Co., Ltd. (hereinafter referred to as "CES"), established in 2008, is affiliated to Cummins Parts Business Unit. It has key operating organizations in the United States, China, India, the United Kingdom, Brazil, Germany, the Netherlands and South Africa, providing solutions for global whole vehicle manufacturers, engine initial installation and modification customers. The company is located in Yizhuang Economic and Technological Development Zone, Beijing, China. It develops and produces the emission treatment systems of Euro 4, Euro 5, Euro 6 and the emission standards of Euro 4, Euro 5 and above. It is a wholly-owned enterprise in China integrating the development, production and sales of emission treatment system products.

CES is an integrated provider of engine aftertreatment technology solutions for the road and off road commercial vehicle markets. It develops and produces various emission solutions and system products for light, medium, heavy and high-power commercial vehicle engines. Cummins emission treatment system can produce and integrate oxidation catalysts, wall flow and half wall flow particulate filters, selective catalytic reducers and other emission control systems. More importantly, with rich practical application experience and early development capability, Cummins emission treatment system can provide Chinese and global customers with complete integrated solutions for post-treatment emission control system.