2-layer PCB with 2.5OZ Copper thickness Material: FR4 Fireproofing: UL-94V0 Plating: Tin/Lead, copper, Nickel and Gold Thickness ... Output with 100% visual inspection and E-test Workmanship compliant with ISO9001: 2000 ROHS Compliant1Layer1-22 layer2MaterialFR-1,FR-2,FR ... , wireless communication,telecommunication, networking, printer and house controller 2 Layers and 2.5oz PCB with E-Test(PCB board )