The income certificate is issued by the personnel administrative department of the unit, and it is best to open it together with the work certificate. If you really don't have it, you can also use the salary slip, a copy of the passbook for paying wages, and a transaction list of the bank card for paying wages.
Proof of financial resources can be a payroll record issued by a bank, or an income tax withholding certificate, or a document that proves the market value of a house, a car, a deposit, an investment, etc. (such as a copy of the real estate license/car driving license/bank deposit certificate) and other materials that can prove your economic level. Social security.
Other reference materials, personal account list of social insurance in the last 6 months, water, electricity and gas bills, credit card bills of other banks, etc. The access standards of each bank are different, so the above information is not necessary, and proof of work or income is very important. The more information provided, the more helpful it is to the approval card and limit.