Both parties to the contract have the corresponding ability to conclude a contract. The true meaning of a contract means that the content of the contract does not violate the mandatory provisions of the law or the public interest. From the above requirements for the entry into force of the contract, it can be seen that a contract can only take effect if Party A has not signed it but only Party B has signed it, so on the surface, it cannot be judged that the contract is the true intention of both parties. If Party A doesn't sign, it means that Party A doesn't approve the contents of the contract, so a contract signed by only one party usually doesn't take effect.

When signing a contract with the other party, one party should not only pay attention to whether the two parties sign it, but also pay attention to whether the contract subject is consistent with the signing subject. If the subject of the contract is the company, and the final signature is only signed by the legal representative of the company, then the contract will not take effect unless the company ratifies the signature of the legal representative afterwards.