125Khz LF Prelam sheet is composed of an Low frequency ICs and cooper coil antenna .It is can not like HF or UHF chip can work on flip chip machine and connect with aluminium antenna only can connect with copper coil antenna .that is why mostly Low frequency is hard tag and can not be label or sticker type for working . Zhixin RFID Tag Co.,Ltd can produce different prelam format according to the need of customers . For smaller tag or some special application we can do smaller copper coil and good performance.