... 2.ENIG IC bonding pcb 3.Fast delivery,competitive price 4.ROHS, UL, ISO9001-2000, ISO14001 1. FR4 material board2. ... 9). Min. Line width/Line spacing: 3mil/3mil10). Copper thickness in hole: >20um11). Board thickness tolerance: ±10%12). Outline tolerance ... requirements: Buried and blind vias, impedance control, thick Cu PCB,selectivity plating gold 30 microinch18). Profiling: Punching, Routing, V ...