... 3.Nice after-sale service 4.10 years in pcba GPS PCBA OEMPCBA specific instructionMaterial:FR-4Layer: 2 layersSurface finish, HASL ... , industrial, networking, automotive, aeronautics, security and other industries equipment productsCertificationISO9001-2000,UL,RoHSR&Dengaged in PCB assembly, LCD driver, ODM and ...