Tamper-proof: The numbered zipper labels are disposable, and each label has a series of unique identification numbers; the zippered plastic labels cannot be opened once locked, and the quantity is sufficient for your useReliable to use: The tamper-proof seals are made of PP plastic, which is resistant to aging and corrosion; the numbered zipper seals are ideal and practical, safe enough but not too difficult to break in an emergencyConvenient to use: In an emergency, the tamper-proof seals are easily torn off by hand, easy to use, and adjustable in length; the plastic security tamper-proof labels will meet your needs and save timeWidely application: The numbered disposable security labels are suitable for fire extinguishers, first aid kits, zipper bags, cables, cloth, bags, hospitals, banks, supermarkets, sprinkler systems, tractors, trailers, etc.