关于延期交货客户罚款的问题

今天到客户的first order, 客户已经回签了pi 但是客户有一个要求，如果在pi规定的交期内不能准时交货 延期一天要取pi 总金额的千分之二作为罚款，请问这样可以接受吗？这个订单的金额不大 只有5千多usd ***please let me know before payment a deposit if you accept agreement about 0,2% penalty for overrun of the finish time? (finish time is when the goods will be ready for dispatch in your factory)*** finish time 45 (your p/i shows 35-40) days = 17.12. if finish date will be in delay for example 25.12. = 8days overrun 0,2% penalty for overrun = 5000 (8 x 0,2=1,6%) = 80usd***** 这是客户的原话 好不容易接到一单，请大家帮我看看，指导一下