(15)It is necessary to ensure that explosives from third countries entering the Union market comply with this Directive, and in particular that appropriate conformity assessment procedures have been carried out by manufacturers with regard to those explosives. Provision should therefore be made for importers to make sure that the explosives they place on the market comply with the requirements of this Directive and that they do not place on the market explosives which do not comply with such requirements or present a risk. Provision should also be made for importers to make sure that conformity assessment procedures have been carried out and that marking of explosives and documentation drawn up by manufacturers are available for inspection by the competent national authorities.