1 There is no fixed format for the power of attorney. It mainly depends on the department where the power of attorney is used.
2 The power of attorney for re-issuing a credit card must be issued to the bank, so just ask the bank about the format and content of the power of attorney.
3 The usual content is
Power of Attorney
Principal: Name
Gender
Date of birth
ID number
Trustee: Name
Gender
Date of birth
ID number
Entrustment matters: Due to... reasons, the client XX entrusts the trustee XX as the agent to go to XX bank to handle the matter on his behalf...
The client : Signature
Date
If the bank says that there is no specific format for the power of attorney and asks you to go to the notary office to ask about the format, be sure to ask the bank what specific contents should be written clearly before you can submit it. If you can handle all the relevant matters, then just write them down clearly when handling them at the notary office.