Dear
This is to acknowledge that we are in receipt of your notice whereby you
informed us that the goods shipped to you on [date] did not conform to our
agreement dated [date].
We regret this unintentional mistake on our part, the reasons for which
were [explanation]
While we recognize that the time for performing under this agreement has
expired, we are requesting that you extend the time to [date] in order that we
may cure the defect by replacing the shipment with goods that conform to our
agreement.
Please accept our apology for this inconvenience. We will be looking
forward to your response.
-商务英语
jhdxy