... For PCB Manufacturing1Layer1-20 layer2MaterialFR-4,CEM-1,CEM-3,Hight TG,FR4 Halogen Free,FR-1,FR-2,Aluminum3Board thickness0 ... .076,NTPH:±0.0514CertificateUL,ISO9001,ISO14001,ROHS,CQC15Profiling PunchingRouting,V-CUT,Beveling16Assembly ServiceProviding OEM service to all sorts of printed circuit ... . PCB with EING Board, Made of Fr4 Material, CNC + V-cut Outline, and Green Solder Mask