... , multi-layer, rigid-FPC SPECIFICATIONCAPBILITY-FPC 1 Material UsedPolyimide, PolyesterMaximum Panel Size19.7"x24(500x610mm)Line width & Spacing3mil(0.075mm)Copper ... Plating Capability-FPC 3 Cover layerPolyimide, Flexible Solder MaskStiffener materialPolyimide, Polyester, FR4, MetalShielding materialCopperfoil, Silver foil, Silver PasteAssembly on FPC (Through ...