... manufacturers, Rigao Electronics is a professional fr4 pcb material with professional technology supplier and factory, we ... by AliCustomer VisitingCompany InformatioFunded in 2008, Rigao Electronics Co., Ltd, is privately held Shenzhen corporation dedicated to ... 6 Layers)High Density Interconnection/HDI PCBHigh frequency material PCBDIP,COB, SMT assembly ServicesComponents SourcingWe have since ...