... -28 , HDI MaterialCEM-1,CEM-3,FR-4, High TG FR-4 , Halogen-free FR-4 , aluminium ,Ceramic(96% Alumina) Teflon,PTFE( ... -8,TLX-9), Arlon(35N,85N)etc.Material Mixed Laminate4 layers -- 10 layers 12 layersFR4+Ro4350 , FR4+Aluminium , FR4+ FPCMaximum Size610mm ... ±0.05mm PTH:±0.076MM NPTH:±0.05mmMini hole ring (single 0.075MM0.05MMOuterLayer Copper Thickness 17um--175um175um--210umInnerLayer Copper Thickness ...