This contract can be signed by Party A or Party B first. As long as all parties sign the contract. Because the contract is established when the parties sign, seal or press their fingerprints; Or if one party has fulfilled its main obligations before signing, and the other party accepts it, the contract can also be established.

legal ground

Article 143 of the Civil Code

A civil juristic act that meets the following conditions is valid:

(1) The actor has corresponding capacity for civil conduct;

(2) the meaning is true;

(three) does not violate the mandatory provisions of laws and administrative regulations, and does not violate public order and good customs.

Article 47 1

The parties may conclude a contract by offer, acceptance or other means.

Article 490

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.