信用狀 Documents required.?

請救救我一個問題:
信用狀電文 Documents required要求如下:
Beneficiary's certificate stating that one complete set of non-negotiable documents have been airmailed directly to the applicat.

(1)請幫我解釋上句的意思?

(2)該如何製作呢?
4 個解答 4