The contract can be signed by the representative. Authorized to sign contracts on behalf of others has legal effect. If you can sign the contract on your behalf, you should have a power of attorney, otherwise the contract will not take effect. The establishment of the contract means that both parties reach an agreement on their will, and the entry into force of the contract means that the contract has been positively evaluated in law after its establishment, resulting in the legal effect of the will of the parties. The general effective requirements of a contract include that the subject is qualified and the actor has corresponding capacity for civil conduct. It means truth. It does not violate the law and public interests, and some special contracts must go through special procedures, such as approval and registration. The entry into force of the contract is based on the establishment of the contract, and it doesn't matter if the contract is not established. On the contrary, the entry into force of the contract means that the contract has been established. Most contracts take effect immediately, that is, the contract is established at the same time as the contract takes effect. The contract does not take effect immediately after it is established, but only after the formalities of examination, approval and registration are completed.

Article 9 19 of General Principles of Civil Law of People's Republic of China (PRC) is a contract in which the client and the trustee agree that the trustee shall handle the client's affairs. Article 920 The principal may entrust the agent to handle one or more specific affairs, or may entrust the agent to handle all general affairs.

What are the precautions when signing a contract?

Verify the qualification of the other party: 1. If the other party to the contract is a natural person, verify, copy and save his identity document, instead of replacing it with a business card, and confirm his true identity and capacity; 2. If the other party to the contract is a legal person, go to the local industrial and commercial department to inquire about its industrial and commercial registration information and check its company on the spot to determine its authenticity, verify whether the contractor is authorized by its company and check its power of attorney, letter of introduction and contract; The signing of the contract must be stamped with the official seal and special seal of the other unit; 3. The other party to the contract is other organizations, and the other party is an individual partnership enterprise or a sole proprietorship enterprise. Check whether the registered items of the business license are consistent with the introduction, and the partner and the manager of the sole proprietorship enterprise shall sign and affix their official seals; In addition to the official seal and private seal, the other party to the contract should sign it himself.