... : FR4 Fireproofing: UL-94V0 Plating: Tin/Lead, copper, Nickel and Gold Thickness: 1.0mm, 1.2mm, 1.6mm selectable Cu ... with UL mark, Date code Wrap and twist board <0.6% Output with 100% visual inspection and E-test Workmanship compliant with ISO9001 ... fire alarm,CCTV, wireless communication,telecommunication, networking, printer and house controller 2 Layers and 2.5oz PCB with E-Test(PCB board )