1. The temporary quota must be used for at least 3 months, and the fixed quota must be used for at least half a year before applying;
2. Daily use of cards, the types of consumption should be diversified as much as possible, and the amount can be large or small;
3. Occasionally withdraw cash and installment, don't cash out;
4. If there is demand for consumption abroad, you must swipe your credit card;
5. Keep a good credit report.
Pay attention when withdrawing the amount. Generally, it takes more than half a year to apply for increasing the fixed quota, and the temporary quota only needs to be used for more than three months.