Where is the license plate number Gan B from?

[RowanRose]

Gan B is the license plate number of Jiayuguan City in Gansu Province. The license plates of other regions in Gansu Province are as follows: Gan A is Lanzhou City, Gan C is Jinchang City, Gan D is Baiyin City, Gan E is Tianshui City, Gan F is Jiuquan City, Gan G is Zhangye City, Gan H is Wuwei City, Gan J is Dingxi City, Gan K is Longnan City, Gan L is Pingliang City, Gan M is Qingyang City, Gan N is Linxia Hui Autonomous Prefecture, Gan P is Gannan Tibetan Autonomous Prefecture. License plates, commonly known as registration plates, are plates hung on the front and rear of vehicles, usually made of aluminum, sheet metal, plastic, or paper, inscribed with the vehicle's registration number, registration region, or other relevant information.