1.FR-4 single side 1 layer pcb bare board. 2.Meet ROHS, UL, SGS. ISO9001:2000. pcb PRODUCTION ... layersMaterial: FR-4, Aluminium Base, Rogers, Taconic, TeflonFinish Board Thickness: 0.2mm-3.2mm (8mil-126mil)External Copper Thickness ... 12LayersMaterialFR-4, AL PCB, CEM-1, Taconic, RogersFinish Board Thickness0.2mm-3.2mm(8mil-126mil)Copper Thickness1/2 oz ... enquiry. FR-4 single side 1 layer pcb bare board