A : Mr Chang, we received the damaged products you sent back, but since you requested a refund we will need your purchase order and proof of delivery.
B : OK, I’ll send everything to you today.
A : Also, do you know how the goods were damaged?
B : No, I’m not sure. Most of the products were broken when I received them.
A : 張先生，我們收到您退換的毀損貨品。因為您要求要退款，我們需要您訂貨的單據和送貨單。
B : 好，我今天就寄給你們。
A : 另外，能不能請問貨物毀損的原因呢？
B : 這我不太清楚，我收到的時候，大部分產品都已經摔壞了。