1.selectivity immersion gold Plating Pcb 2.UL ,ROHGS,SGS,ISO ... .01'',0.25mm, or 10milsSurface FinishHASL,Nickle,Immersion Gold,Immersion Tin,Immersion Silver,OSP,etc.Board Thickness Tolerance ... partial turn-key or consignmentComponent packagingCut Tape,Tube,Reels,Loose PartsTurn TimeSame day service to 15 days serviceTestingFlying ... perseverance to stick to it. selectivity immersion gold Plating Pcb