The large-amount installment credit card written on the Qingdao Rural Commercial Bank Card refers to an installment business of the bank card. According to relevant public information, credit card large-amount installments are an installment business in which banks, in order to meet the large-amount consumption needs of credit card holders, provide an additional credit limit in addition to their credit limit, and the customer will repay it on schedule. The customer will then need to repay it on schedule. Amortization means that there will be multiple repayments, with the principal and interest repaid being divided into each installment.