What is the equivalent Chinese emission standard for Euro IV with OBD?

[SanJuliet]

Euro IV with OBD is equivalent to China IV standard. China IV standard refers to the fourth phase of national motor vehicle pollutant emission standards in China. The main pollutants emitted by vehicles include hydrocarbons, nitrogen oxides, carbon monoxide, and particulate matter. Through the application of technologies such as the active layer of catalytic converters, secondary air injection, and exhaust gas recirculation systems with cooling devices, these standards control and reduce vehicle emissions to below specified limits. Methods to check a vehicle's emission standard: 1. Check the motor vehicle certificate of conformity; 2. Look for the vehicle delivery checklist; 3. Log in to the motor vehicle exhaust pollution supervision and management website; 4. Check the back of the environmental protection label on the vehicle's front windshield; 5. Bring the vehicle registration form to the vehicle management office for inquiry. Vehicle emission sources come from the exhaust pipe, crankcase, and fuel system.