material FR-4,thickness 0.2-3.2mm copper weight 0.5-2.0mil,surface finished Immersion gold,high quality,low price, fast deliver Printed Circuit Board (PCB) copy service:Layers:4- moreMaterial: FR-4 ;Thickness: 0.2-3.2mm;Min.line width: 0.2mm;Min.line space:0.2mm ;Min.hole diameter:0.25mm ;Max.board size:600*1200mm Application:Cam350,pads2000,proter DXPBlind/buried via holes: OK;Soldermask:green, ...