单证（Documents)1、进出口业务涉及的单证总的包括三大类：1。金融单证（信用证、汇票、支票和本票） 2、商业单证（发票、装箱单、运输单据、保险单等）3。用于政府管制的单证（许可证、原产地证明、商检证等） declarationn form报关单 Three stepsdeclaration, examination of goods and release ofn goods, are taken by the Customs to exercise control over general import and export goods.海关对进出境货物的监管一般经过申报、查验和放行三个环节。 the person in charge of the declaration invoice负责的人的声明发票发票n ocean bill of lading提单n air waybill空运提单n packing list或 packing specification（装箱单）n n shipping order(装货单) letter of credit（L|C
