According to the new traffic law, all vehicles can't hang the factory logo that doesn't match the brand of the vehicle, or they will be fined if they are found by the police. In addition, the Measures for the Administration of Automobile External Signs stipulates that the manufacture, sale and use of trademarks without permission infringes on the exclusive right of trademark owners and violates the provisions of the Trademark Law. Therefore, although the owner's bid change is a personal act, it is also illegal.

According to the national regulations, these signs should be checked during the registration and annual inspection of new cars. The automobile logo includes the trademark or factory logo, product nameplate, engine model and factory number, vehicle model and factory number, and vehicle identification code.