You're going out of your way for us, I believe.

我相信这是对我们的特殊照顾了。

I can assure you of our close cooperation.

我保证通力合作。

All these articles are best selling lines.

所有这些产品都是我们的畅销货。

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

请你尽量放慢说话速度。

We have mainly adopted some usual international practices.

我们主要采取了一些国际上的惯例做法。

We are always willing to cooperate with you and if necessary make some concessions.

我们总是愿意合作的，如果需要还可以做些让步。