... CEM-1/AluminiumLayersingle layer,double layer,multi-layer(4-10)Board Thickness0.3mm-3.0mm,+/-0.1mm(tolerance)Copper ... to 105um),+/-8um(tolerance),purity 99.5%Impedance Control±10%Bow and Twist MAX.0.75%(SMT)Anti-strip ... Space Width 6 mil,+/-0.15mm(tolerance)SMD Pitch 10 milBGA Pitch 20 milMin Pad Space 4mil(SMT)Plating ... SGS,ISO,ROHS,UL, Welcome to visit WALBOND ! lcd display timer control PCB