... PCB products, under RoHS, UL, SGS etc. certififcated Copper Clad Laminates sheet.Include CEM1, FR1, FR2, CEM3, ... 0mm,1.2mm,1.6mm,2.0mm .Thickness of copper:18um, 35um, other thickness is according to order ... deep nick, pitting and glue spot on the copper foil covered face is not allowed. Any color ... density 1.02g/cm3 hydrochloric acid or proper organic solution .3) On laminated face, the defects such ...