... /CEM-1/AluminiumLayersingle layer,double layer,multi-layer(4-10)Board Thickness0.3mm-3.0mm,+/-0.1mm(tolerance)Copper Thickness1/2OZ ... )Pad to hole/to pad Tolerance±0.05mm/±0.2mm Solder Mask Pad no Open soldermask must cover all on both side ... inside the hole on both side Solder Mask Thickness0.7mil,raised H≤0.05Colour green,blue,red,yellow,black,white(LPI/MATT.,UL ...