Advertising material posted in large quantities may be placed in closed sealed envelopes or plastic bearing the impression "sealed under permit".
See example on the right.
Items posted at regular intervals and in quantity of 1000 or more may bear the "postage paid" impression.
In the case of regular and big customers the postal charges may be paid at the end of each month by obtaining a special permit from the Department of Postal Services.
See examples on the right pictures.
Business reply service enables authorised senders to pay the postages of reply items on behalf of their respondents.
See examples on the right pictures.
