rfid tag for books 1.HF 13.56mhz iso15693 or UHF 2,Rohs EN71 SGS approved 3,Testing samples for free rfid tag for books Specification1)Antenna dimension:45*45mm and others2)Tag dimension:50*50mm, 48*48mm or on demand 7*135mm3)Working Frequency:13.56 MHz4)Chips available: NXP I CODE Sli/ NXP I CODE Slix; NXP I CODE-Slis , Alien h3 ,Impinj M3 or others5)User Memory: 896 bits EEPROM Read/Write6) ...