At present, not all banks only have cash installment business. Banks such as ICBC, China Construction Bank, Shanghai Pudong Development Bank and China Everbright Bank support cash installment business. Before you want to use this function, you should consult your card issuer in advance whether it has this service.
Cash installment and installment fee. Taking ICBC as an example, the number of periods you can choose is 3, 6, 9, 12, 18, 24 and so on. The credit card cash installment fee shall be charged by not less than 50% of the benchmark interest rate of loans of the same grade and term of the People's Bank of China.
If you have other specific questions, I suggest you call the customer service staff of the bank, hoping to help you.