... .one-stop service 3.quicker delivery 4.UL,ISO9001 electronic universal lcd controller board 1.Number of Layer: 1 to 28 ... , yellow, Red etc. 4.Surface Finish: Lead Free HAL, HAL, Flash Gold, Immersion Gold, Immersion Tin, Immersion Silver, OSP, Gold Finger ... 8 Layers Immersion Gold Board / PCB XJYPCB MachinesXJYPCB Production: electronic universal lcd controller board