As the manager of Westfalia Separator Southeast Asia, I want to
thank you for giving us the opportunity to serve you. Please help us
serve you better by taking a couple of minutes to tell us about the
service that you have received so far.
We appreciate your business and want to make sure we meet your
expectations. Attached, you will find a coupon good for ...... We
hope that you will accept this as a token of our good will.