... circuit board manufacturers, Rigao Electronics is a professional through hole assembly, plug-in soldering for electronical circuit board ... of PCB Manufacturing 1Layer1-30 layer2MaterialFR-4,CEM-3,Hight TG,FR4 Halogen Free,FR-2,Aluminum3Board ... 0.0514CertificateUL Cert.,ISO9001 :2008,TS16949,ISO1400015Profiling PunchingRouting,V-CUT,Beveling16Assembly ServiceProviding OEM service to all sorts of ...