1. Both parties do not need to affix the seal of the contract. The law does not stipulate whether the contract should be sealed by both parties or only by one party. You can choose freely. The purpose of the riding seal on the contract is to prevent one party from modifying the contract without authorization. In fact, if both parties stamp to confirm the establishment of the contract, and both parties hold the contract, it has the same legal effect as the contract held by the other party. Therefore, it is up to both parties to decide whether the contract is stamped by one company or two companies.

2. Legal basis: Article 490th 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.

Second, how to cover the contract riding seal?

1, ready to cover the riding seal;

2. Prepare Indonesia, neither too deep nor too shallow;

3. Separate the materials to be stamped evenly and evenly, and the space between pages should not be too big or too small, depending on the thickness of the materials;

4. After the materials are evenly distributed, you can stamp them, try to ensure smoothness, and cover them once after alignment.

5. After the cover is completed, check whether each page covers a part of the chapter.