函电

shēn qǐng zì qiān zhèng xū yào yǒu bèi shòu quán dān wèi de hán diàn

申请F字签证，需要有被授权单位的函电。

In application for Visa F, a letter or telegram from the authorized organization.

wài mào hán diàn xiě zuò de sān yuán zé

外贸函电写作的三C原则

principle of three C in the writing of business Letters