... Sheet FR4 Copper Clad Laminate,Pcb Base Board,Laminated Board,Printed Board, CCL FR4, FR1,XPC, CEM-1 etc Copper Clad Laminate Sheet FR4Copper Clad Laminated Sheet ... high grade electronic instruments.2. FR-1copper clad laminated sheet/CCL consist of bleached wood pulp paper, impregnated ... electrolytic copper foil. 3. XPC Copper clad laminated sheet/CCL consist of bleached wood pulp paper, impregnated ...