1. Attachments in the contract need to be signed separately. According to the law, 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. This clause also applies to annexes, which are an integral part of the contract, and their contents need to be signed, sealed or confirmed by fingerprints of both parties;
2. According to the relevant provisions of Chinese laws, when an enterprise signs a contract, both the main contract and the annex need to be stamped with the official seal of the enterprise before the contract will take effect. Annexes to a contract are generally related documents that supplement the text of the contract and are an effective part of the contract. The relevant annexes to this contract have the same legal effect as this contract. Conditional contract refers to a contract in which the parties agree on certain conditions, and whether the conditions are met or not determines the occurrence or elimination of the effectiveness of the contract.
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. Article 495 Where 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.