... assembly (OEM)We are professional PCBA manufacturer ,and we do R&D and contract manufacturing for the medical,instrument ... your requirement5.SMT process,ROHS PCB assembly specific introduction:1.Optional materials: ... instrument, environmental, industrial, networking, automotive, aeronautics, security and other industries equipment productsCertificationISO9001-2000,UL,RoHSR&Dengaged in PCB assembly ...