The seal on the contract does not have to be affixed to the signatures of the parties.

The terms of the contract do not require the parties to write them themselves, but they must personally sign or seal them. The signatory shall be the party concerned himself, or the legal representative or person in charge of the unit, or the person in charge or agent of the authorized department or agency. For the latter, a more prudent approach is for the signatory to submit a written legal authorization letter.

The legal person authorization letter should include the following contents: the basic information of the authorized person, the clear scope of authorization including the time range and objects of authorization, the seal of the authorizer or the authorizing unit or the signature of the legal representative, Authorization date.

The seal must be consistent with the subject of the contract. It usually appears that the column of parties to the contract is different from the subject of the seal. This will bring unnecessary trouble to the performance of the contract and the determination of the subject.

The parties to a contract all know that they need to sign when signing a contract, but rarely seal it. Although not all contracts are stamped with seals, stamped contracts are common after all. Especially in written contracts, the issue of sealing is a very important issue. The issue of contract signature and sealing is a major issue involving the vital interests of the parties involved. The parties to the contract can consult a lawyer about signature and seal issues to avoid disputes.

Article 490 of the "People's Republic of China and Civil Code" Where the parties conclude a contract in the form of a contract, the contract is established when both parties sign, seal or fingerprint. Before signing, sealing or fingerprinting, one party has performed its main obligations and the contract is established when the other party accepts it. Laws and administrative regulations stipulate or the parties agree that a contract should be concluded in written form. If the parties do not use written form but one party has performed its main obligations and the other party accepts it, the contract is established.

_Article 491_ If the parties conclude a contract in the form of letters, data messages, etc. and require the signing of a confirmation letter, the contract shall be established when the confirmation letter is signed. If the product or service information published by one party through the Internet or other information networks meets the offer conditions, the contract is established when the other party selects the product or service and successfully submits the order, unless otherwise agreed by the parties.