1.我们新研制的……已推出上市，特此奉告。

We are pleased to inform you that we have just marketed our newly-developed….

2.我们的新产品刚刚推出上市，相信您乐于知道。

You will be interested to hear that we have just marketed our new product.

3.我们从……获知贵公司的名称，不知贵公司对这一系列的产品是否有兴趣。

Your name has been given by...and we like to inquire whether you are interested in these lines.

4.我们盼望能成为贵公司的……供应商。

We are pleased to get in touch with you for the supply of...