Copper Clad Sheet 1.Thickness:0.6,0.8,1.0,1.2 ... 0mm,1.2mm,1.6mm,2.0mm .Thickness of copper:18um, 35um, other thickness is according to order. Face: 1 ... computers, home electric appliances and other lines.FR4 ccl technical date: FR4 TECHNICAL DATA SHEET NOITEMUNITINDEX1Surface resistance after damp ... No measling or blistering or delamination13WarpageBowmmMax: 18TwistMax: 20 FR4 Copper Clad Laminate Sheet