... purchased by us o PCB board with parts assembled o Electronic testing circuit board or PCBA o Fast delivery, anti- ... or 6,upto 18 layerOrder Quantity1 to 50,000Board ShapeRetangular,round,slots,cutouts,complex,irregularBoard TypeRigid, Flexible, Rigid-flexibleBoard MaterialFR ... Immersion Tin,Immersion Silver,OSP,etc.Board Thickness Tolerance±10%Copper Weight Tolerance± 0.25 ozMinimal Slot Width0.12'', 3 ...