... ). Surface Treatment: HASL,HASL lead-free,HAL, Flash gold, immersion gold, OSP, Gold Finger Plating, Selective thick gold plating, immersion silver, immersion tin, Carbon ink, peelable ... : Buried and blind vias, impedance control, thick Cu PCB, selectivity plating gold 30 microinch19). Profiling: Punching, Routing, V-CUT, Beveling20). Certificate: UL ...