... circuit electronic pcb board is the best selling line in our factory,pcb assembly,rigid pcb past UL,ISO9001,ISO14001,ROHS. circuit ... electronic ,pcb assembly,pcb board,rigid pcbOur product developed most recently ... for Rigid PCB:1) Layer: 1, 2,multilayer2) Board finished thickness: 10%3) Material: FR-4, ... services to all sorts of printed circuit board assembly