The informal platform will be in the name of interest-free, in fact, it will charge you a handling fee and so on, so be sure to figure out your own staging procedures.
Interest-free installment payment means that banks cooperate with merchants to provide certain products or services to credit card holders, and banks first pay the products purchased by cardholders in full to merchants in one lump sum. The cardholder will use the credit card to repay the bank in installments. You don't need to pay interest as long as you pay in monthly installments.