Riveted aluminium tags are the default for plant and machinery. Pre-punched to your fastener size, mechanically fixed, and completely unaffected by the oil film that defeats adhesive. Where a machine is going to be in service for fifteen years, this is the only specification that lasts the distance.
Acetone-activated aluminium works well on clean, flat machine housings and control panels, permanently bonded, and rated -40°C to +120°C with good resistance to water, oils and many industrial chemicals.
On-metal RFID tags are where large plants gain the most. A standard RFID tag stops working when mounted on metal, because the surface detunes the antenna. On-metal tags are engineered with a spacer layer so they read reliably on machinery, racking and vehicles, and they let you verify hundreds of assets a minute without line of sight, which is the difference between a two-week annual count and a two-day one.
Stainless steel tags for the genuinely extreme: chemical exposure, sustained high temperature, marine and wash-down installations.
Polyester for the office block, where spending plant-grade money makes no sense.
We will tell you when RFID is not worth it. Below roughly 2,000 assets verified once a year, barcode tags cost a fraction as much and do the job. RFID earns its premium on asset count, verification frequency and labour cost, ask us to run those numbers for your plant rather than guessing.