The commitment letter is signed by the commitment party. A letter of commitment is a written expression of the offeree's complete consent to the offer, that is, the offeree agrees to accept all the conditions of the offer and forms a contract with the offeror, which generally only needs the signature of the promisor. Legal objectivity:

Article 471 of the Civil Code of the People's Republic of China, the parties may conclude a contract by offer, acceptance or other means. Article 479 of the Civil Code of the People's Republic of China * * * An acceptance is an expression of the intention of the offeree to agree to an offer. Article 49 of the Civil Code of the People's Republic of China If the parties conclude a contract in the form of a contract, the contract shall be formed when all the parties sign, seal or fingerprint it. 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 writing as stipulated by laws and administrative regulations or agreed by the parties. If the parties fail to do so in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.