建议信
Dear ()，
I am writing to express my views concerning (). In the first place, I would like to say thank you for the help and everything else you have been offering to us. Meanwhile, I also want to make some advice to better () .
Firstly, we have found that(). Secondly, we want to (). Finally, we hope that ().
I am looking forwards to your consideration about my proposals. Thanks in advance for that.
Yours sincerely,
Wang Lin
