The purchase or change of insurance products must be signed by the insured himself. If someone else writes for it or initiatively signs it, the contract is invalid, but if something really goes wrong, you need to have evidence. Although the court is mostly in the interests of the insured now, the evidence is still the most important, because besides your signature, there is also a telephone call back, which will be held.

the signature of the guarantor is an internal regulation of the insurance company, and so is the signature of the back office. It is for some internal management of the company to prove who is responsible for this piece, and this person will be responsible if there is any mistake. The law first faces the responsibility of the insurance company, and then the insurance company will find the responsibility of the corresponding person. Therefore, their signatures are also legally effective.