Credit cards cannot be exchanged for other types of supplementary cards. For example, the main card is a visa card, and so is the auxiliary card. If it is not, the supplementary card cannot be treated as a visa card alone. \x0d\ The supplementary card is only used by the spouse, children and parents of the main cardholder. Domestic applicants must be 14 years old, and overseas applicants must be 18 years old. \x0d\ The secondary card shares the credit line of the primary card, and the accounts are merged into the primary card account, without separate billing. Sub-card points are accumulated in the name of the main card holder, and the repayment of the sub-card is included in the main card account. \x0d\ Card handling method \x0d\ Method 1: The main card and the auxiliary card are applied at the same time. Please check the supplementary card when applying. \x0d\ Path 2: The main cardholder applies for supplementary card for relatives \x0d\ Apply for supplementary card online, print the online application form according to the prompts, sign it and mail it to the bank together with the identity certificate of the supplementary cardholder. \x0d\ You can also apply at bank outlets. The main cardholder must carry the identity certificate of the supplementary cardholder, and the supplementary cardholder does not have to accompany him. \x0d\ Affiliate cardholder identification document \x0d\ Domestic people need to provide a copy of their resident ID card or military ID card, 16 years old can provide a copy of the household registration book; Foreigners are required to provide passports or Hong Kong and Macao residents' passes to and from the mainland or a copy of mainland travel permit for taiwan residents. \x0d\ Inquire about the time limit and progress of card processing \x0d\ Generally, the card can be received within 15 days after receiving the card-issuing SMS. \x0d\ The credit card was sent by registered mail. If you need to send the card by express, please call the credit card service hotline, press 3#, enter "Apply for a credit card", and then press 1 to transfer to labor. Courier fee, 20 yuan.