根据以下信用证条款，回答相关问题。Applicant：Nissho 1wai Corporation No．4-5 Akaasaka 2-Chome Mi—Natou Tokyo，JapanBneficiary：China National Mine Import and Export Corp．Beijing，P．R．ChinaPre-advice：Bank of China，Beijing BranchDocuments required：Full set of clean on board marine bills of lading made out to order and blank endorsed ，marked “freight prepaid”.

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