... ,Blue,BlackSilk ScreenDouble-sided or single-sided in white,yellow,black,or negativeSilk Screen Min Line Width0.006'' or 0.15mmMax ... .25mm, or 10milsSurface FinishHASL,Nickle,Immersion Gold,Immersion Tin,Immersion Silver,OSP,etc.Board Thickness Tolerance±10%Copper Weight Tolerance± 0 ... me.I am Eva. Our team and I will do our most to meet your requiremt. multilayer HASL-LF PCB for lead-free soldering