Multi-Layer PCB High frequency PCB (Rogers, F4BK, Taconic ) Metal PCB (Al-based, Cu-based) HDI PCB assembly 2 layer,1.6mm,immersion gold 2 ... layer,1.6mm,immersion Tin 4layer,1.6mm,immersion gold,plated ... control With regard to our PCB prdocts,pleas find the following specification,table1 and 2:Table 1: layer2-26SurfaceLead free HALFinished ...