Where is the white license plate starting with bn?

The white license plate at the beginning of bn belongs to the General Armament Department of Beijing Military Region, and the license plate is XY 12345, which is used for military vehicles. The first letter stands for region or category, for example, Guangdong is G, Air Force is K, and the second letter stands for different departments, for example, A is the headquarters. Military vehicle number plate is the symbol of military vehicles of China People's Liberation Army (including Armed Police Force). It is a license plate with registration code issued by the military traffic department after examining, checking and registering the vehicle applying for license plate. This is a proof that the state has given military vehicles special management rights. The scope of military license plate includes all vehicles included in the establishment of weapons and equipment forces, vehicles included in the establishment of logistics equipment forces, vehicles used for life and service support in the establishment of vehicles in military institutions, professional vehicles approved by headquarters and large units, vehicles used for self-purchase and self-distribution, vehicles with military license plates reserved by the military and vehicles limited by the joint military-civilian office responsible for military support tasks.