1. The central bank will give everyone a number and grant different total credit lines, and any credit lines handled in the future will be deducted from the total credit lines. For example, if the utilization rate of the total credit line is too high, there will be little room for credit card credit in the future. Without a high credit line, the credit line will naturally be low.
2. If the personal debt ratio exceeds 50% of the income, or there is an overdue credit record, the repayment ability is not good, or the credit card held is not good, and there is suspicion of illegal use of the card, the bank will not rest assured to give an excessive amount.