1. After negotiation, the 4S store agreed to return the car, but only if the owner signed a confidentiality agreement.

2. When handling the refund, you must sign a car return contract or a car return agreement with the 4S store. The agreement needs the official seal of the 4S store or the signature of the person in charge, as well as the signature of the owner himself. Only in this way can this car return certificate have legal effect. Therefore, 4S stores need to sign the car return process.