1, often use credit cards, regardless of the amount, as long as you can swipe your card, you will definitely spend.
2. It is best to generate at least 30% of the total bill consumption every month.
3. The bill of credit card consumption needs to last for 3 months in a row, and it can't be broken in the middle, that is, there must be consumption every month.
After a while, you can call the Credit Card Center of China Construction Bank to apply for an increase. As long as the increase is not too big, it will generally be approved.