FR4,FR1,CEM-1,CEM3 copper clad laminated sheet can supply, made ... FR2, CEM3, FR4 .Thickness:0.6mm,0.8mm,1.0mm,1.2mm,1.6mm,2.0mm .Thickness of copper:18um, 35um, other ... thickness is according to order .Face: 1 and 2 .Size: 1020mm*1220mm .Features: 1) The end face of foil covered ... Any color changing or dirty can be easily. removed by density 1.02g/cm3 hydrochloric acid or proper organic solution .3 ...