Epoxy HF Hard N-TAG213 NFC Chip Tag is made of hard pvc and nfc chipset with epoxy over single size or bothsides . They can be printed full color, encode ,serial number , barcode and different kinds of size ,shape as requested . Diameter 25, 30, 35,40mm ,  40*35mm ,42*26mm , 30*30mm ,etc are available . E-co friendly epoxy resin has highly transparency and durable in out-door harsh environment and water proof .Widely use for access nfc keytag , dog ID tags , metro tags , bus tag ,etc . Another 125KHz and 860-960MHz frequency are available .