... line in our factory,pcb assembly,rigid pcb past UL,ISO9001,ISO14001,ROHS. circuit electronic ,pcb assembly,pcb board,rigid pcbOur product ... than the competition. Reference - Our Production Capability for Rigid PCB:1) Layer: 1, 2,multilayer2) Board finished thickness: ... Line spacing: 0.1mm7) Surface finish/treatment : HASL / HASL lead free, Chemical tin, Chemical Gold, Immersion Silver/Gold, OSP, Gold ...