... PCB ·High TG (170C) PCB ·Free halogen PCB ·Impedance control PCB ·Different PCB surface finish: HAL, Flash gold, Immersion gold ... -175µm9.Mini Solder Mask Bridge:0.025mm10.Impedance Control Tolerance:l.±5%11.Surface finishing:HASL,LEAD-FREE ... ink.12.Solder Mask Color:Green,Red,White,Yellow,Black,Blue.13.Quality Standards:IPC-A-600F and MIL ... :UL,ISO9001:2000,ISO14001,SGS,ROHS wireless level control board