... in hole: >20um11). Board thickness tolerance: ±10%12). Outline tolerance: Routing:±0.1mm,Punching:±0.1mm13). Hole tolerance: PTH: ±0.076mm ... , thick Cu PCB,selectivity plating gold 30 microinch18). Profiling: Punching, Routing, V-CUT, Beveling19). Certificate: UL,ISO 9001,ISO14001,ROHS20). We ...