If the buy does not make the fully payment in four days (including due date), the buy must pay a late fee of 0.005% on overdue total amount in a daily basis to the supplier.

买方应从买价付款期限届满后的第四个工作日起（包括该日）按照每日万分之五的比例就未及时支付的款项向卖方支付滞纳金。

youdao

If the buy does not make the fully payment in four days (including due date), the buy must pay a late fee of 0.005% on overdue total amount in a daily basis to the supplier.

买方应从买价付款期限届满后的第四个工作日起（包括该日）按照每日万分之五的比例就未及时支付的款项向卖方支付滞纳金。

youdao