Base Material: FR4 Layer : 2 layers Min. Line Width/Space: 3mils/3mils(0.076mm/0.076mm) Min. Annular Ring Width: 3mils(0.076mm) Min. Hole Size: 0.1mm Min. Blind-via: 0.1mm Min. Buried-via: 0.1mm Min. Inner layer clearance: 0.010" Min. Silkscreen line width: 5mil Min. SMD spacing 3mil: 9.6 Mini. Pad diameter: 3mil Max. Board Thickness: 6.0mm Aspect Ratio≤ 10: 1 Max. Board Size: Double size: 600*900mm, Multilayers 500*800mm Surface Technique: HASL Lead-free