On June 12, China National Heavy Duty Truck held a lecture on the technical route of the State IV engine. A total of 118 technicians from second-tier companies such as trucks, commercial vehicle companies, special vehicle companies, sales companies, import and export companies, and technology centers heard a lecture from Zhong Limin, a senior engineer at the Hangzhou R&D Center.

The training focused on the analysis and analysis of China National Heavy Duty Truck EGR IV/D10 engine and Sinotruk SCR IV/D10 engine, especially focusing on engine R&D, exhaust gas after-treatment, engine performance and engine structure. Zhong Limin also gave a brief introduction to the requirements of China National Heavy Duty Truck IV engine users and the State IV engine OBD.