The network structure of aluminum foil and separate line together with differences
This structure can prevent the wire broken insulation, and can be fixed easily through the internal structure, test.
So, there is no structure with aluminum foil, but some manufacturers do with shielding network line structure and a layer of independent Mylar, then + wire, coupled with aluminum foil.
The full name for wire wire aluminum foil Mylar foil, itself has a layer of Mylar, pure aluminum foil with physical properties of words so thin, easily broken, not normal production.