... ,FR-4,CEM-1,CEM-3,Hight TG,FR4 Halogen Free,metal base3Board thickness0.2mm-7mm4Max panel size630mm*520mm 1200*200mm ... )7min.line spaceing0.075mm(3mil)8Surface finish/treatmentHALS/HALS lead free,Chemical tin,Chemical Gold,Immersion gold Inmersion Silver/Gold,Osp ...