Legal analysis: you don't need to stamp every page, just stamp the last page. Because there are several contracts, it is usually enough to stamp the company seal on the last page. In addition to stamping on the last page, you can also stamp on other pages, which is more strict. The use of the seal (namely, the seal) is equal to the signature of the seal owner (namely, the name of the seal), and the effectiveness of the seal is equal to the effectiveness of the signature.

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.