Legal analysis: As long as the letter of commitment is signed by myself, it has legal significance. A letter of commitment is actually a contract. The letter of commitment signed by individuals is of course legally binding. There is no specific law on how and where to sign. As long as you are clear, you can sign the letter of commitment after the text.

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.