Legal analysis: There is no specific law on whether Party A signs the contract first or Party B signs it first. Whoever signs the contract first can decide through consultation. The general contract shall come into effect as of the date of signature by both parties, and the date of establishment shall be subject to the date of signature by the last party.

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.