... ISO9001, UL 3.Well-established system Professional PCB manufacture. Single layer PCB board We are a high-tech enterprise which specializes ... low production cost, but not just products.The capability: ItemSpecificationsNumber of Layer1-12LayersMaterialFR-4, AL PCB, CEM-1, Taconic, RogersFinish ... inch×21 inch)ConductorWidth(W)+/-0.05mm(2mil)+/-20%of original artworkHole Diameter(H)PTH L:+/-0.075mm(3mil) ...