... PCB board with parts assembled* Electronic testing circuit board or PCBA* Fast delivery, anti-static ... ShapeRetangular,round,slots,cutouts,complex,irregularBoard TypeRigid, Flexible, Rigid-flexibleBoard MaterialFR-4 glass epoxy, FR ... Silver,OSP,etc.Board Thickness Tolerance±10%Copper Weight Tolerance± 0.25 ozMinimal Slot Width0 ... ...etc) immersion gold multilayer printed circuit board /circuit boards