Multi-Layer PCB High frequency PCB (Rogers, F4BK, Taconic ) Metal PCB (Al-based, Cu-based) HDI PCB assembly 2 layer,1.6mm,immersion gold ... 1.6mm, matt green, BGA,impedance control With regard to our PCB prdocts,pleas find the following specification,table1 and ... 90Ω±7%Technology with step slot&step holeHDI3+N+3Application standedIPC-6012 class 2Multilayer PCB Table 2: PCB business:Prototype : ...