... inlay,contactless card chip,NXP inlay,TK4100 inlay,EM4100 inlay proximity inlay,rfid inlay,contactless card chip,NXP inlay,TK4100 inlay ... is original from EM Microelectronic.Each of the EM marin proximity card have a unique seiral number. It is great solution ... .Your customized design and sample card are always welcomed. WENLIN proximity inlay,rfid inlay,contactless card chip