Dear Mr。 Chang:

   On September 10， our order for 280 women's cotton sweaters was duly received， but we regret to say that 40 cotton sweaters in white color were seriously soiled。

   We had the case investigated immediately， and the result shows the damage was due to improper packing， for which the suppliers are definitely responsible。

   Needless to say， we have suffered a great loss from this， as we cannot sell the sweaters in this condition to our customers。 We ask you to conduct investigation at your end and reply to us。

Sincerely yours，

Li Ming

親愛的常先生：

   9月10日，我們訂購了280件女式羊毛衫，但我們很遺憾地說，有40件純棉色的毛衣被嚴重弄臟了。

   我們立即對該案進行了調查，結果表明損壞是由于包裝不當造成的，供應商對此負責。

   不用說，我們遭受了巨大的損失，因為我們不能出售毛衣在這種情況下，我們的客戶，我們要求你進行調查，在您的結束，并回答我們。

你真誠的，

李明