Layers: FPC 1~4 L Finished Board Thickness with Copper : Min 0.075mm (1L) / Max 0.3mm (2L) Finished Board Thickness Tolerance: �±0.02~0.04mm Impedance Control :+/-10% Base Copper Thickness : Standard : 1/3oz,1/2oz,1oz / Spcial:2oz Base Film Thickness:Standard:0.5mil , 1mil / Special : 2mil Stiffener:PI / FR-4 /SUS Finished Hole Diameter:Min { }0.15mm / Max { }6.30mm Finished Hole Diameter Tolerance PTH�±3mil(�±0.075mm) npth�±2mil(�±0.05mm)