... ISO9001,SGS,IPC 3.Prompt delivery 4.High quality Printe circuit board Specification:1.Factory Price2.Certification:UL, ISO9001,SGS,IPC3. ... HAL/HAL lead-free/Immersion Silver/Entek1I.nsulation Resistance10KΩ-20MΩ12.Conduction Resistance< 50Ω13.Testing Voltage300V14.V-CUT Pnl ... Roundess0.25mm(10mil)Board Thickness6 layers:±0.15mm(6mil) If you interested it, send us Gerber File ,pls. Printe circuit board