If you are planning to import blind pcb,Website:http://www.ljpcb.com, Longjiang Circuit International Limited is one of the leading blind pcb manufacturers and suppliers, welcome to contact with our factory.Type: blind PCBfinal board thickness: 1.2mmfinal copper thickness: 1/1/1/1 OZsolder mask colour: blacksilk screen colour: whiteMaterial: HTGBuried holes: L1-2; L3-4Min. line width/space: 0.125mm/0.125mmmin diameter of finished hole: 0.2mmsurface finish: immersion gold