It seems that if you want to raise the limit, you need to look at your credit rating and some transactions. For example, how much your bank card is credited monthly, the consumption record and repayment record of your credit card, etc., and they should have internal promotion standards, because banks can't agree just because someone applies for raising the limit, so if they meet those fraudsters, they will just swipe it and run away, and they will be in trouble. I applied several times, but I didn't succeed. Later, after a year or two, I suddenly sent a message to say that I had been promoted. Maybe at that time, I decorated my house, swiped my card when I bought things, and then the repayment record was good, which made it possible to meet the requirements. I hope to adopt it!