This type of letter is an outgoing letter and maybe called a "first Enquiry".

这种类型的信函或许可被称为“ 第一次询价?。

youdao

Trading emissions for forestry credits is now in their early stages in China. Just a few weeks after the launch of the program the first overseas enquiry arrived.

林业信贷额的交易排放现在在中国处于早期阶段。在项目开始不到几个星期之后，就收到第一个海外咨询。

youdao

Try to get a discount from the first time you enquiry about the car.

试图获得一个折扣您第一次询问了车。

youdao

She does a good job on Whitewater, the Arkansas real-estate scandal which prompted the independent counsel's enquiry in the first place.

ECONOMIST: The Clinton scandal is getting the books it deserves

He returned to NASA twice to serve on boards of enquiry, the first into the near-disaster of Apollo 13, the second into the disintegration of the space shuttle Challenger in 1986.

ECONOMIST: Neil Armstrong