Legal analysis
According to the relevant laws and regulations, the official seal represents the unit, and the contract seal is the special seal used by the unit when signing the contract. The official seal is the most effective of all seals and a symbol of legal person's rights. In the current legislative and judicial practice, it is an important criterion to judge whether a civil activity is established and effective. Unless there are special provisions in the law, the official seal can be used to represent the will of the legal person and sign contracts and other legal documents with high legal effect. The official seal can be used for all letters, official documents, contracts, letters of introduction, certificates or other company information issued in the name of the company. So the official seal can be used to sign the contract. The official seal of the company represents the company externally. Under normal circumstances, as long as the legal documents are stamped with the official seal of the company, the company should bear the corresponding legal responsibilities. So when signing a contract, you can use the company's contract stamp or the company's official seal. The unit only seals the contract, because the administrative seal of the unit represents the company, which can be considered as the true meaning of the company, so as long as the contract is true, then the contract is valid. According to the relevant laws and regulations, if the parties conclude a contract in the form of a contract, the contract will be established when the parties sign, seal or press their fingerprints. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it.
legal ground
Article 490 of the Civil Code of People's Republic of China (PRC): If the parties conclude a contract in the form of a contract, the contract is concluded when the parties sign, seal or fingerprint it. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it. A contract shall be concluded in written form as stipulated by laws, administrative regulations or agreed by the parties. If the parties do not do this in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.