1)4-layer pcb for smart card with ENIG surface 2) certificate:UL,ROHS, ... ,ISO9001,T/S16949 3)Min hole size:0.3mm 1)4-layer pcb for smart card with ENIG surface2)Min hole size:0 ... )certificate:UL,ROHS,REACH,ISO9001,T/S16949 ITEMSSPECIFICATIONLAYER1-26BOARD MATERIALFR-4,CEM-1,CEM-3BOARD THINCKNESS0.2mm-6.0mmCAMBERD≤0.75 ...