Legal analysis: 1. The charging standard of delivery fees must be informed to customers in advance; 2. Losses caused by sending the wrong customer shall be compensated.

legal basis: the format clause in article 496 of the civil code of the people's Republic of China is a clause drawn up by the parties in advance for repeated use, without consulting the other party when concluding the contract. Where a contract is concluded by standard terms, the party providing the standard terms shall follow the principle of fairness to determine the rights and obligations between the parties, and take reasonable measures to remind the other party of the terms that are of great interest to the other party, such as exempting or reducing its responsibilities, and explain the terms according to the other party's requirements. If the party providing the standard terms fails to perform the obligation of prompting or explaining, so that the other party fails to pay attention to or understand the terms that have a significant interest in it, the other party may claim that the terms will not become the content of the contract.