1. Providing personal information: As a guarantor, you need to provide personal identification, work certificate, income certificate and other information to the bank to prove your credit status and repayment ability.

2. Accept credit investigation: the bank will investigate the credit status of the guarantor to determine whether it is qualified as a guarantor.

3. signing a letter of guarantee: as a credit card guarantor, you need to sign a letter of guarantee and promise to repay the loan when the borrower cannot repay.

a credit card, also known as a debit card, is a credit certificate issued by a commercial bank or credit card company to a consumer with qualified credit.