We would appreciate an early reply.
We look forward to your favorable reply.
We look forward to hearing from you soon.
Your prompt attention to this matter will be appreciated. *prompt迅速的
Please write us at the above address.
We hope that you will...
Your kind cooperation in this respect is greatly appreciated.
Your kind cooperation on this issue is greatly appreciated.
We hope we can count on your continued cooperation and support. * count on指望
We look forward to your...
We trust our request will... *trust 包含了hope和believe两个词的意义
We are looking forward to the time when...
Please do not hesitate to contact us.
Please do not hesitate to call us.
We are always anxious to assist you in... *渴望，想…
We are always willing to assist you in...
Should you have any questions, please do not hesitate to contact us.
If you have any questions, please feel free to contact us.
Thank you for calling this matter to our attention. *call sb's attention提醒..注意
Thank you very much for your cooperation.
Thank you for the opportunity to be of service.
We appreciate this opportunity to...
Thank you for this opportunity to...
It is always a pleasure doing business with you.
It is always a pleasure serving you.
It is always a pleasure to serve you.
Please accept our sincere apologies.
I want to extend my personal apologies for...
We wish you a bright and successful New Year.
We trust that an increase in sales will continue in the future.
Yours very truly, 谨致问候 *用于商业。
Sincerely yours, *用于商务信函或朋友
My best regards, *给朋友写信时
With best regards,
The very best to you,