Legal analysis: it is not necessary to sign every page. The contract can only be signed and sealed on the last page, because there should not be only one copy of the contract itself, at least one copy for each party, and the contents of each contract should be exactly the same. You can also stamp the contract to ensure the validity 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.