Legal analysis: the official seal of the company (that is, the official seal consistent with the name of the business license) should be affixed. The house lease contract shall take effect when it is signed or sealed. If the house is a unit, it will take effect when it is stamped with the official seal of the unit or the special seal for the contract. According to the law, if the parties conclude a contract in the form of a contract, the contract will be established when both parties sign or seal it.

Legal basis: Article 490 of the Civil Code of People's Republic of China (PRC). If the parties enter into a contract in the form of a contract, the contract shall 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. 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.