1.4L Rigid-Flex circuit board 2.Min Hole Size:0.3mm 3.Use :mobile PCB 4.UL,ISO9000,ISO14000,ROHS 4L Rigid-Flex circuit boardBase Material:FR4Copper Thickness:1ozBoard Thickness:0.25mmMin Hole Size:0.3mmMin Line Width:0.1mmMin Line Spacing:0.1mmSurface Finishing:immersion goldDelivery:3-7daysCertificate:UL,ISO9000,ISO14000,ROHSPacking:seal packing 4L Rigid-Flex circuit board