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

亲爱的常先生：

   9月10日，我们订购了280件女式羊毛衫，但我们很遗憾地说，有40件纯棉色的毛衣被严重弄脏了。

   我们立即对该案进行了调查，结果表明损坏是由于包装不当造成的，供应商对此负责。

   不用说，我们遭受了巨大的损失，因为我们不能出售毛衣在这种情况下，我们的客户，我们要求你进行调查，在您的结束，并回答我们。

你真诚的，

李明