装船时付款英文

40%在加载时启动驳船完成后的 10 %mvessel 上加载

Our payment condition is when signing the prepayment one half, before the shipment pays in full another one half.

50% upon signing the contract and after pra shipment应该是：签订合同时付款50%，发货后付完余款。这个pra很难理解，最好问下发邮件的人，确保付款万无一失。40% upon loading start to barge 10%upon completed loaded on MVessel应该是：货物开始装船时付款40%；装船后追加10%的付款。