Legal analysis: Unauthorized sales are not necessarily illegal, but without authorization, there is no agency or sales power, and the sales behavior is invalid. The agent shall exercise the power of agency within the scope of agency authority and shall not act without authority. Selling other people's branded goods without authorization is an infringement. If the brand is a registered trademark, it will constitute a trademark infringement and you will have to bear the consequences of compensation. When handling the case, if the industrial and commercial administrative department determines that the infringement is established, it shall order it to immediately stop the infringement, confiscate and destroy the infringing goods and tools mainly used to manufacture infringing goods and counterfeit registered trademarks. If the illegal business turnover exceeds 50,000 yuan, it may be punished. A fine of not more than five times the illegal business volume may be imposed. If there is no illegal business volume or the illegal business volume is less than 50,000 yuan, a fine of not more than 250,000 yuan may be imposed. Those who commit more than two trademark infringements within five years or have other serious circumstances shall be severely punished.

Legal basis: "The People's Republic of China and the Civil Code"

Article 162: Civil laws implemented by an agent in the name of the principal within the scope of agency authority The act takes effect on the principal.

Article 163: Agency includes principal agent and legal agent. The authorized agent exercises agency power in accordance with the principal's entrustment. The legal agent shall exercise the power of agency in accordance with the provisions of the law.