the supporting documents required for handling credit cards are:
1. proof of income (at least one of them)
such as the original official work certificate issued by the work unit, the original work card or business card with comprehensive information, the name of the display unit, the name of the applicant, and the social security/medical insurance/provident fund supporting materials that have been paid in the last three months.
2. Proof documents of financial income (optional, which will help to increase the quota)
For example, the original or photocopy of the salary records issued by the bank, the income certificate issued by the unit, the income tax withholding certificate, the self-owned real estate license/house purchase contract/bank mortgage repayment schedule, the self-owned car driving license, and the deposit certificate of Huaxia Bank.
3. identification (essential)
a copy of the identity card of a domestic person-resident; Compatriots from Hong Kong, Macao and Taiwan-Hong Kong and Macao residents' passes to and from the mainland, Taiwan Province compatriots' passes to and from the mainland and copies of residence endorsements or multiple round-trip endorsements; Foreigners-a copy of the passport and residence permit or employment permit in China of the country to which the foreigner belongs;
other reference documents can be your own social security, water and electricity bills, academic credentials, etc.
I suggest you consider whether to apply for a credit card according to your actual situation. If your monthly salary is not high, you'd better go to a commercial bank to apply for a credit card. China Merchants Bank has a less strict audit and a higher pass rate. I wish you success soon.