PCB fabrication, PCB assembly.
Board: Al / Cu base printed board, rigid / flexible board, flex-ridgid board, high frequency board, ceramic substrate board, HDI. And the multilayer board can up to 26 layers.
Surface finish: Hot air leveling, Immersion Tin/Gold/Sliver, Electroplanted soft gold, Gold finger, Carbon ink, Peelable mask, OSP, Hard gold, Bare copper.