Hehe, a letter of guarantee is generally a guarantee of a contract, which means that in the performance of the contract. According to the law or contract, the legal act provided by the guarantor to the creditor guarantees that when the creditor fails to perform the debt, the guarantor will perform or bear the responsibility on his behalf! Generally divided into engineering guarantee and commercial guarantee! The most fundamental function of the letter of guarantee is to save liquidity for the company! I am familiar with the project guarantee, and you can call me Q Chat Hehe if you are interested.