I can see you have put a lot of time into it.

我相信你在制定这个计划上一定花了不少精力吧。

The purpose of my coming here is to inquire about possibilities of establishing trade relations with your company.

我此行的目的正是想探询与贵公司建立贸易关系的可能性。

We also hope to expand our business with you.

我们也希望与贵公司扩大贸易往来。

It would help if you could try to speak a little slower.

请你尽量放慢说话速度。

Let me give you an indication.

我可以提示一个想法。

Our service, so far, has been very well-received by our customers .

到目前为止，顾客对我们的服务质量评价甚高。