... free,immersion gold,immersion silver,immersion tin,O.S.P (Entek),S/G plating,ENEPIG,G/F plating,carbonQuality ... -shapeCertificates UL Cert. YISO Cert.ISO9001 :2008TS16949YISO14000YManufacturing Capability for PCB Board 1). Material type: CEM-3,FR-4,FR ... Special requirements: Buried and blind vias, impedance control, thick Cu PCB,selectivity plating gold 30 microinch18). Profiling: Punching, Routing, V- ...