printed circuit boards good quality,best price. FilesGerber, Protel, Powerpcb, Autocad, Orcad, ... - 12 LayersBoard thickness0.015"(0.4mm)-0.125"(3.2mm) Board Thickness Tolerance±10%Copper thickness0.5OZ - 3OZImpedance Control±10%Warpage0 ... days10 days10 Layer12 days14 days12 daysAlu-base3 days8 days7 days printed circuit boards