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. However, if the contract held by the other party has the same supplementary part, it can be regarded as a part of the original contract and has the same effect as other parts. Asking for deposit or compensation will be supported. After the contract is signed and takes effect, it cannot be changed at will, otherwise it will be invalid. Or sign and seal the changed place. Or directly redraft the contract and re-sign.
1. After the contract is signed, if any party takes illegal measures to control others or steal the contract to modify or forge the contract for its own benefit, the modified part of the contract will be invalid and the original contract will be maintained;
2. After the signing of the contract, if either party wants to modify the contract, it must inform the other party, sign the contract again or modify or supplement the corresponding terms of the original contract with the official seals and personal handprints of both parties at the modification place; If you only make a verbal commitment, but you don't modify the contract, or you don't affix your handprint to the changed place, it will be deemed invalid and the original contents of the contract will continue to take effect.
After a legally protected contract is established according to law, its legal binding force, that is, its legal effect, shall not be changed or dissolved without authorization.
Because the will of the parties to a contract conforms to the will of the state and social interests, the state binds the will of the parties and requires them to strictly perform the contract. Otherwise, they are required to perform the contract and bear the liability for breach of contract by relying on the coercive force of the state.
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.