Looking forward to your soonest reply.
Awaiting your quick response.
Hope to hear from you back soon.
Waiting for your earliest reply.
1. I am at your disposal and we keep waiting for your soonest reply.
2. I am at your service any time and looking forward to hearing from you soon.
3. I would be very obliged if you would be so kind to let me know your feedback.
4. We really hope to do something for you,please kindly keep us updated about your idea.
5. Please come back to me if you have any questions or updates.Thanks in advance.
6. Waiting for your comment and let's see what we can do to serve you.
7. We value our relationship and treasure clients' comment to offer them better service,please help me.
8. Looking forward to your earliest reply and cooperating with you .
9. Hopefully......we can have a chance to work with you.
Anyway,your earliest reply would be highly appreciated!
10. Hope to support your business and hear from you back soon.
11. We are collecting clients’ comment and suggestions to improve our product design and offer you advantage product and valued service,please help me.
12. Please come back to me and let's see what we can offer to support you.
13. Let me know what is your question.
14. Please, let me know your thoughts, thank you.
15. We are doing some research about our product and aim at offering tailored solution and valued service for you,we would highly appreciate it if you are kind to give us your idea.