circuit pcb is the best selling line in our factory.electronic component, pcb board, electronics past UL,ISO9001,ISO14001, ROHS pcb ... board,electronic component, circuit pcb, electronicsOur product developed most recently is lower ... 5) Min. drilled hole size: 0.3mm6) Min. Line width: 0.13mm Min. Line spacing: 0.1mm7) Surface finish/treatment : HASL / ...