To authorize a brand on 1688, you need to comply with the relevant authorization agreement, then negotiate with the company that needs authorization, reach an authorization agreement and sign a contract. After signing the authorization agreement, you can handle related matters such as trademark registration, issuance of authorization letters and authorization fees. In addition, in order to ensure that the brand authorization is legal and valid, you also need to pay attention to assessing whether the target company meets the authorization conditions, reviewing whether the relevant contract terms have passed the legal review, and preventing the brand from being abused after authorization. It is also recommended to seek professional legal support during the authorization process to ensure the legality and validity of the authorization agreement.