... UL,ISO9001,ISO14001,circuit electronic,circuit pcb high-density double sided rigid pcb board,circuit electronic, circuit pcb, electronic component ... Rigid PCB:1) Layer: 1, 2, multilayer2) Board finished thickness: 10%3) Material: FR-4, CEM ... Halogen Free,FR-1,FR-24) Max. finished board size: 1500mmx500mm 5) Min. drilled hole size: ... Provides OEM services to all sorts of printed circuit board assembly