... : 2L, rigid+flex Line width/spacing:4/4milSurface finish:Immerison gold Finished board thickness: 40+/-4mil Application: Hardware Zone Carrier Product process ... capability1,Layer: 1-302,Board finished thickness:0.21mm-7.0mm3,Material: FR-4,CEM-1 ... ,CEM-3,High TG,FR4 halogen Free,Rogers4,Max.finished board size:23*25(580*900mm)5,Min.drilled hole ...