Give you a brief introduction to how unlimited credit cards are produced. The reason why banks have zero credit cards is because of the bad debt rate and they don't want to miss potential good users. Most of them are aimed at newly graduated college students or credit card whites. For example, the League of Legends credit card issued by China Merchants Bank has a red cover and is a zero-quota credit card for college students. College students can apply only by providing academic certificates and identity certificates;

So how do you use your unlimited credit card? Don't cancel your credit card immediately after you get it. As long as it is used properly, the bank will increase the credit card limit. Cardholders can deposit cash in their credit cards for more than 3 months, and banks will increase the credit card limit. The amount of credit line depends on the cardholder's monthly deposit and consumption.