However, on the other hand, it has to be said that technology has evolved considerably over the last decades and new materials (or combinations of materials) may have been introduced, which were not known at that time and which generally have become known for their solidity and security, also in case of application as Customs seals/fastenings.
Cependant, les techniques ont considérablement évolué au cours des décennies et des matières nouvelles (ou de nouvelles combinaisons de matières) ont fait leur apparition et se sont révélées solides et sûres, y compris pour l'apposition de scellés ou la mise en place de liens de fermeture à des fins douanières.