... below can all be customised:1) Layers, size, thickness2) Base material : FR4,CEM33) Solder mask: Red, Green,Yellow,Blue or ... : Tin soldering, plating gold, immersion gold,OSPDiscription:1) Layer: 1-402) Board finished thickness: 0.21mm-7.0mm3) Material: FR-4, CEM ... treatment : HASL / HASL lead free,HAL, Chemical tin,Chemical Gold, Immersion Silver/Gold,OSP,Gold plating 8) Copper thickness: 0.5-7.0 OZ9 ...