请问各位高手，下面信用证中的这段话，如何写一个受益人证明？急，谢谢！

这段话在信用证中很常见的，大致意思是：一整套不可议付的单据必须在船开后用快递寄给申请人，并且受益人证明上必须说明一整套不可议付的单据已经在船开后用快递寄给申请人了，相应的快递收据必须和其他单据一起寄给申请人

受益人证明可以这样写：
CERTIFICATE
DATED:JUNE.17TH,2010

RE:INVOICE NO.:

TO WHOM IT MAY CONCERN:

WE HEREBY CERTIFICATE THAT : ONE SET OF NON-NEGOTIABLE DOCUMENTS HAVE BEEN DESPATCHED TO
APPLICANT BY COURIER AFTER SHIPMENT

盖上公司章

BENEFICIARY'S CERTIFICATE

DATE:（日期在船运之后）

WE CERTIFY THAT ONE SET OF NON-NEGOTIABLE DOCUMENTS HAVE BEEN
DESPATCHED TO APPLICANT BY COURIER AFTER SHIPMENT.

受益人签章

同时将邮寄的回执（也就是COURIER RECEIPT，快递公司签收给你的那张）作为信用证单据的一部分。 （注意回执日期在装船之后，收件人是申请人）

WE HEREBY CERTIFY THAT ONE SET OF NON-NEGOTIABLE DOCUMENTS HAS BEEN DESPATCHED TO APPLICANT BY COURIER AFTER SHIPMENT.

以上是证明内容。要盖章签字，然后再加上快递收据（订在这个证明上）就正确了。