... board. 2.Meet ROHS, UL, SGS. ISO9001:2000. pcb PRODUCTION CAPABILITYLayers: 1-20 layersMaterial: FR-4, Aluminium Base, Rogers, Taconic, TeflonFinish ... Immersion Gold+ OSP. ItemSpecificationsNumber of Layer1-12LayersMaterialFR-4, AL PCB, CEM-1, Taconic, RogersFinish Board Thickness0.2mm-3.2mm( ... (25 inch×21 inch)ConductorWidth(W)+/-0.05mm(2mil)+/-20%of original artworkHole Diameter(H)PTH L:+/-0.075mm( ...