... in our factory,pcb assembly,rigid pcb past UL,ISO9001,ISO14001,ROHS. circuit electronic ,pcb assembly,pcb board,rigid pcbOur product developed ... packing11) Hole tolerance: PTH: ±0.076 NPTH: ±0.0512) Certificate: UL, ISO 9001, ISO 14000,SGS , RoHS, CQC13) Profiling: Punching, Routing ...