... CEM-3 is a kind of copper foil covered laminated board formed through heat pressing after the electric ... into thermoset epoxy resins and is covered with copper foil at one side or both sides . Standard Size ... X49' , 37'X49',43'X49'Circuit Layer(copper foil )18μm,35μm,70μm,105μm( ... sets, milling machines ,routing machines, threading machines, board cutting machine .3. Technical team with experience of more ...