... --FR4 copper clad laminated sheet- FR4, Copper clad laminate --FR4 copper clad laminated sheet- FR4,FR4 copper clad laminated sheet to be consisted of E ... ,1.2mm,1.6mm,2.0mm and so on;Thickness of copper: 18um, 35um and ect, and be adjusted by the customer ... , pin hole, deep nick, pitting and glue spot on the copper foil covered face is not allowed. any color changing or ...