1)4-layer pcb for smart card with ENIG surface 2) certificate:UL,ROHS,REACH,ISO9001 ... ,T/S16949 3)Min hole size:0.3mm 1)4- ... layer pcb for smart card with ENIG surface2)Min hole size:0. ... :UL,ROHS,REACH,ISO9001,T/S16949 ITEMSSPECIFICATIONLAYER1-26BOARD MATERIALFR-4,CEM-1,CEM-3BOARD THINCKNESS0.2mm-6.0mmCAMBERD≤0. ...