... CEM-3 is a kind of copper foil covered laminated board formed through heat pressing after the electric industry alkali-free ... sides . Standard Size (mm) 41'X49' , 37'X49',43'X49'Circuit Layer(copper foil )18μm,35μm,70μm,105 ... lathe: 5 sets, milling machines ,routing machines, threading machines, board cutting machine .3. Technical team with experience of more than 10 years ...