We can provide OEM membrane switches, FPC, silicon rubber, EL, touch screens and assemblies Specifications: 1) Min. trace width : 0.004"2) Min. space between trace: 0.004"3) Min. hole size: 0.012"4) Thickness tolerance: a) Single sided: 0.005"b) Double sided: 0.010"5) Base materials: polyimide and polyester6) Conductor (copper thickness): 0.5oz., 10oz. and 20oz. (RA and ED copper)7) Cover-layer: ...