... and twist board <0.6% Output with 100% visual inspection and E-test Workmanship compliant with ISO9001: 2000 ROHS Compliant1Layer1-22 layer2MaterialFR ... 1,FR-2,FR-4,CEM-1,CEM-3,Hight TG,FR4 Halogen Free,3Board thickness0.2mm-3.5mm4Max panel size630mm*520mm5Min ... alarm,CCTV, wireless communication,telecommunication, networking, printer and house controller 2 Layers and 2.5oz PCB with E-Test(PCB board )