Some big banks are very strict and need proof of residence in the last month, such as one of the bills of water, electricity, coal or telephone. It is unlikely that a credit card will be sent without postage. There is only one possibility, that is, applying for a credit card is an activity, and I think it may be an activity. Most banks have credit card processing activities, and each activity is different.
Don't apply for a credit card casually, because the credit card itself requires an annual fee. Most credit cards are free of annual fees for the first year, and then they need annual fees, which is very expensive. Although credit cards can be overdrawn, if they can't repay before the prescribed time limit, they will have to pay late fees, which will also affect credit. That's a blacklist. It is best not to apply for credit card consumption or go abroad. .