下面內容請幫忙翻譯英文，謝謝。 我們已經檢查過每捲布，每捲都有一條黑線的問題，你們提供的目錄上並沒有這條黑線，而我們客人不接受這樣的瑕疵，我們想換貨。?

我們已經檢查過每捲布 we have checked every roll of cloth
每捲都有一條黑線的問題 there is a problem of a black stripe on each roll
你們提供的目錄上並沒有這條黑線 there is no such black stripe as shown on your provided catalogue
而我們客人不接受這樣的瑕疵 and our customers do not accept this kind of defect
我們想換貨 we would like to have the product returned for exchange

As carefully examined by us, there is a black stripe found on each single roll of cloth, which does not appear on the catalogue provided by you.

Accordingly, we would like to have the goods returned for exchange, as our customers do not accept this kind of defect.

Thanks for your feedback!

We've checked every roll of cloth, but we found there's one black line on all cloth.
Besides, there's no any black line shown on your catalog.

After checking with our customers, they're unable to accept this discrepancy.
Therefore, we request for replacement.
Please advise how soon new clothes will be ready?
Thank you!