You must bring your ID card. Of course, other documents, such as social security card, income certificate, real estate license, etc., can also be carried with you. After all, handling a credit card is not as simple as handling a savings card. Only when you explain your purpose will the staff ask you to fill out the credit card application form immediately. After carefully filling it out, the staff will ask you to take out the relevant documents, and they will copy the relevant documents as the basis for review and send you a credit card. Remember, if you don't know how much to fill in the credit line, you can ask the staff and they will give you a detailed answer.