When will China 6b be implemented?

[CollinFitz]

Nationwide, China 6a will be implemented starting from July 1, 2020, and China 6b will be implemented from July 1, 2023. Currently, multiple provinces and cities have announced the early implementation of the China 6 emission standards (among them, Shanghai, Guangzhou, Shenzhen, and Tianjin will directly implement the stricter China 6b standard from July 1, 2019, while Beijing will directly implement the China 6b standard from July 1, 2020). After July 1, 2019, mainstream markets (accounting for 65%-70% of China 6 regions) will only be able to sell "China 6" compliant vehicles. The China 6 emission standard will be implemented in the following two phases: 1. Starting from July 1, 2020: All vehicles sold and registered must comply with the China 6A standard; 2. Starting from July 1, 2023: All vehicles sold and registered must comply with the China 6B standard; some cities will advance the implementation of the China 6 emission standard for light-duty vehicles to January 1, 2019.