... 3,mailing usage 4,mail,courier bags 5,Courier use Introductions:Mailing bags, also named Mailing envelopes courier bags,experess bags,mailing bag.1. ... 2,the common specification bags 3,Has the column for write adress bags 4,no printing bag 5,bubble lining mail bag 6,single color ... bags 7,aluminium foil bag Ems ...