an ad for garbburg group shows the id tag on the back of its package
Sicherheitsetiketten / Inventarkennzeichnung
Safety Identification | Inventory Marking With the polyester film T9003V you will be on the safe side. The Garburg polyester film T9003V matt silver has been specially developed for the transmission-proof marking. It is equipped with concealed squares, which, when peeled off, clearly separate from the foil and adhere to the substrate. On the foil, these symbols appear as empty spaces; Labels made from this material can not be transmitted undisturbed.