When was the China V emission standard implemented in Shanghai?

[StJackson]

Shanghai implemented the China V emission standard on April 30, 2014. Below is an introduction to the China V and China VI emission standards: 1. Meaning: The higher the number, the more environmentally friendly the vehicle's emissions are, and the later the standard was released, the stricter the energy-saving and emission-reduction requirements for the vehicle. 2. Pollution: China I has the highest pollution level, while China VI has the lowest, generally categorized by the year of implementation. 3. Engine: The main difference between China V and China VI vehicles is that China VI vehicles use a more efficient three-way catalytic converter, enabling the engine's emissions to meet the China VI standard. 4. Upgraded Version: The China VI emission standard is an upgraded version of the current China V standard, imposing more stringent and scientific requirements on vehicle tailpipe emissions.