... Material, Layers, Copper Thickness, Board Thickness, Surface Finish, Solder Mask, Board SizeQuantity for month/yearHigh and low ... 1,FR-2,Aluminum3Board thickness0.2mm-7mm4Max.finished board side500mm*500mm5Min.drilled hole size0.25mm6Min.line ... carton packing13Hole tolerancePTH:±0.076,NTPH:±0.0514CertificateUL,ISO9001,ISO14001,ROHS,CQC15Profiling PunchingRouting,V-CUT,Beveling16Assembly ...