1. Applicant 18 to 60 years old. To apply for a supplementary credit card, the applicant must be 16 to 60 years old.
2. When the primary and secondary cards are applied at the same time, one primary card can only carry one secondary card. And a main card can apply for up to four sub-cards.
3. The applicant shall fill in the application form truthfully and accurately according to the regulations and requirements of the issuing bank, sign a written contract with the issuing bank, and submit the supporting documents required by the postal bank.