Black card rights and interests: As a top credit card, black card holders can enjoy the best service, which can be said to be complete, very humane and caring. Banks that launch black cards will provide customers with "all-round personal assistant" services, and the bank's promise is that as long as they can think of it, they can do it. This is why it is called "noble card". With a black card, you can enter and leave the social circle of the upper class at will, expand your contacts and so on. For black cards, there is no so-called "credit line". Because the credit line of a black card can be improved infinitely intelligently.