First, the accumulation of personal credit, the landlord's current credit card needs to be well maintained for a period of time. If there are bad consumption records such as overdue, it will affect the re-application of credit cards and the approval of credit lines.
Second, the stability of personal career, generally speaking, the same application materials get different amounts, which is due to the different proportion of items in the credit card scoring system of each bank. As far as I know, married people are higher than unmarried people; Housing is higher than no housing; People who have accounts in the bank and often have records of money in and out are higher than those who don't. Therefore, the landlord needs to prepare financial proof materials.
Third, the level of personal education, generally speaking, the higher the education, the higher the credit card quota, and the better the school, the higher the quota.
To sum up, the credit card limit of a bank mainly depends on the stability of personal credit, personal occupation and personal sources of funds, so the landlord can compare the above three items and see how high his rating is before deciding whether to apply for a second credit card. I hope my answer can help the landlord!