... LPI,Also support Red,White,Yellow,Blue,BlackSilk ScreenDouble-sided or single-sided in white,yellow,black,or negativeSilk Screen Min Line ... Hole Diameter0.01'',0.25mm, or 10milsSurface FinishHASL,Nickle,Immersion Gold,Immersion Tin,Immersion Silver,OSP,etc.Board Thickness Tolerance±10%Copper Weight Tolerance ... method for PCBAOur PCB Assembly ShowsView of Our Workshop Single Sided HASL Lead Free PCB