According to Article 115 of the "Interpretation of the Civil Procedure Law": "The certification materials submitted by the unit to the People's Court shall be signed or sealed by the person in charge of the unit and the person who prepared the certification materials, and Stamped with the seal of the unit. "That is, if the certificate issued by the unit submitted by the party to the people's court is only stamped with the seal of the unit without the signature or seal of the person in charge of the unit and the person who prepared the certification materials, it does not comply with this article. The People's Court will not accept the provisions on the formal requirements of the unit's certification materials.