Which regions still allow registration of China V emission standard license plates?

[SanSteven]

China V license plates can be registered in regions where the China VI emission standard has not been implemented. Methods to identify a vehicle's emission standard are: 1. Check the environmental protection label sticker on the vehicle; 2. Examine the vehicle certification where the standard is indicated by Roman numerals - I for China I, II for China II, III for China III, IV for China IV, V for China V, and VI for China VI; 3. Use the vehicle registration certificate to check at the local vehicle management office. Taking China VI as an example, the China VIa standard specifies: 1. Gasoline vehicles must not emit more than 700mg of carbon monoxide per kilometer driven; 2. Gasoline vehicles must not emit more than 68mg of non-methane hydrocarbons per kilometer driven; 3. Gasoline vehicles must not emit more than 60mg of nitrogen oxides per kilometer driven; 4. Gasoline vehicles must not emit more than 4.5mg of PM (particulate matter) per kilometer driven.