1. Seal the official seal of the company at the final signing place of the contract;

2. Stamp the signature of the legal representative on the last page of the contract;

3. If there are multiple pages, you need to stamp the riding seal.

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.