What does a black license plate mean?

[BrookeLynn]

Black license plates refer to plates with black background, white characters, and white borders. They are issued to foreign enterprises (including those from Hong Kong, Macau, and Taiwan), foreign and international organizations stationed in China, vehicles purchased in China by foreigners under private ownership, vehicles entering from Hong Kong, Macau (Taiwan), and foreign countries, as well as vehicles temporarily detained by customs with temporary plates or confidential institutions. Below is an introduction to license plates: (1) Large motor vehicle plates: Yellow background with black characters and black borders. (2) Small car plates: Blue background with white characters and white borders. (3) Trailer plates: Yellow background with black characters and black borders. (4) Motorcycle plates: Yellow background with black characters and black borders. (5) Light motorcycle plates: White background with vermilion characters. (6) Tractor plates: Yellow background with black characters. (7) Agricultural vehicle plates: Yellow background with black characters and black borders.