Password letter means that ABC Credit Card Center will send you the initial transaction password after you decide to activate your credit card. There is only one password in the letter. You can change your password after receiving the password letter, and you will never reveal your personal information. 1. The password letter of Agricultural Bank's credit card is surface mail, and it will take about 7- 15 working days to arrive. 2. You can set the password directly through the ABC self-service voice system activation card, and a password letter will not be sent to you after successful setting. You haven't received the password for more than 30 days. Please call customer service at 800-8 1-95599 or 021-61-95599.