18、销售合同Sales contract
19、定单Order
20、定货单Purchase order
21、装箱单Packing list
22、许可证licence
23、出口许可证export licence
24、进口许可证import licence
25、一式两份in duplicate
26、一式三份in triplicate
27、一式四份in quadruplicate
28、单据，文件document
29、跟单信用证documentary credit
30、汇票 draft
31、跟单汇票 documentary draft
32、保函letter of guarantee
33、标记及号码Mark and No.