... parts list provided by customers* PCB board made, circuit board parts purchased by us * PCB board with parts assembled* Electronic testing circuit ... Weight1.0, 1.5, 2.0 ozSolder MaskDouble-sided green LPI,Also support Red,White,Yellow,Blue,BlackSilk ScreenDouble-sided ... ,Nickle,Immersion Gold,Immersion Tin,Immersion Silver,OSP,etc.Board Thickness Tolerance±10%Copper Weight Tolerance± 0.25 ozMinimal ...