... , ISO14001, ROHS 2. FR4,cem-1 pcb, HASL 3. Competitive Price 4., High ... 8 layers Manufacture CapabilityItemManufacture CapabilityLayers1-16 LayersMaterialFR-4, CEM-1, Aluminium Base, Rogers, TaconicFinish Board Thickness0.2mm-3 ... 0.25mm V-CUT: 0.40mmImpedance Control Tolerance+/-10%Test Voltage10-300VSolder Mask TypesGreen,Yellow,Red,White, Blue ... !Try us, your sincere friend! CEM-1 94v0 single layer PCB