RFI token tags - PCB Metal Tag -Impinj chip, twice reading distance -All-weather,IP 65 -36 months warranty PCB Metal Tag - Passive Asset tagIntroduction & feature:Perfect combination of technology and application: Completely self-owned patent. Independent R&D. PCB package, Small and light. Smart heart with small appearance: Impinj chip bulit-in, Alien chips optioanl . 2 times reading distance ...