Multi-Layer PCB High frequency PCB (Rogers, F4BK, Taconic ) Metal PCB (Al-based, Cu-based) HDI PCB assembly 2 layer,1.6mm,immersion gold ... , different impedance 8layer, 0.8mm, immersion gold,impedance control HDI 14layer, 1.6mm, matt green, BGA, impedance contro14layer, 1 ... &step holeHDI3+N+3Application standedIPC-6012 class 2Multilayer PCB Table 2: PCB business:Prototype : you can order any quantity ...