No, it can be signed or stamped. According to the provisions of Article 22 of the "Regulations on the Implementation of the Trademark Law of the People's Republic of China", the applicant stamps and signs in the applicant's stamp and signature column of the "Application for Division of Trademark Registration". This means that whether the applicant submits directly or entrusts an agency to submit, the applicant and his or her agent should stamp and sign in the corresponding stamp column. The seal is not limited to an official seal, but can also be a personal seal or signature.