whether you need authorization to sell branded products depends on the purchase channel. If there is no power of attorney, only a certificate with a formal purchase channel (that is, a purchase invoice) can be used. If the purchase channel is normal, it is not fake and shoddy brand goods, and it does not need the authorization of the brand owner or the brand manufacturer. Selling authentic branded goods does not require authorization.

whether the trademark right will be infringed depends on whether the trademark owner authorizes you to use the brand. As long as the act is authorized, it not only does not harm the interests of the producer of genuine goods, that is, the trademark owner, but its publicity and advertising behavior increases the popularity of goods, promotes the circulation and sales of goods, and brings economic benefits and trademark reputation to the trademark owner. Naturally, it will not infringe trademark rights.

article 2 of the intellectual property law of the people's Republic of China: the administrative department for industry and commerce of the State Council shall set up a trademark review and adjudication board to handle trademark disputes.

article 21 of the intellectual property law: the trademark office shall notify the applicant in writing of the trademark whose application is rejected and which will not be announced. If the applicant is not satisfied, he may apply for reexamination within 15 days after receiving the notice, and the Trademark Review and Adjudication Board will make a final decision and notify the applicant in writing.