One set of non-negotiable shipping documents must be sent to the applicant with 7 banking days after the date of shipment by email or air mail .a certificate to this effect must accompany with the original documents .这里的文件指的是那些?肯定寄得的是副本吧?箱单和发票的副本是怎么弄的啊?是用PL CI 的扫描件吗?最后一句话的意思是不是向银行交正本单据的时候,把此份受益人证明也一同交上去?