The secondary card is relative to the primary card. The master card and the slave card are slave cards. The secondary card is attached to the main card, with the same function and account. The debt arising from the transaction of the secondary card shall be borne by the cardholder of the primary card. The secondary card is only a subsidiary card of the main card. Once the primary card is cancelled, the secondary card must also be cancelled together with the primary card.

The basic conditions of the applicant for the secondary card are:

1,/kloc-the spouse, parents or children of the principal card applicant who is over 0/6 years old and has full capacity for civil conduct.

2. Provide a copy of valid identity documents. Valid identity documents refer to resident identity cards, passports, military officers' cards, police officers' cards of armed police, passes for Hong Kong and Macao residents to and from the mainland, and passes for compatriots from Taiwan Province Province to and from the mainland.

To add an add-on card, follow these steps:

First of all, the applicant who applies for the supplementary card needs to fill in an application form, in which the main card information and the supplementary card information must be filled in completely.

Secondly, provide a copy of the ID card of the principal cardholder and a copy of the ID card of the applicant of the secondary card.

Finally, the main cardholder signs the application form and indicates the main card number, and then submits the completed application form to the acceptance outlets.