What symbols represent China V and China VI?

[Lane]

China V and China VI are represented by the symbols 'China V' and 'China VI' respectively. These are national standards for motor vehicle pollutant emissions. The higher the number, the stricter the requirements for energy conservation and emission reduction, indicating that the vehicle's exhaust is more environmentally friendly. China VI is an upgraded version of China V, imposing more stringent and scientifically advanced requirements on vehicle exhaust emissions. A China V-compliant vehicle meets the national fifth-stage motor vehicle pollutant emission standards, while a China VI-compliant vehicle adheres to the sixth-stage standards. Different emission standards have varying limits on vehicle pollutant emissions, with the standards becoming progressively stricter from China I to China VI.