... Special requirements: Buried and blind vias, impedance control, thick Cu PCB,selectivity plating gold 30 microinch18). Profiling: Punching, Routing, V ... system,Ensure the quality of all productsLow cost (100USD) Prototype PCB:Qty: 10pcsBoard size: 100mm*150mmLayers: Double-sidedMaterial: FR4 ... and 8L PCB120-hour for 10L or more layers PCB at the soonest digital electronic FR4 pcb board with flash gold