DOUBLETHIN

Unwrought and semi-wrought common metals and their alloys of common metals; unwrought and semiwrought copper; copper alloys; copper ores; common metals in foil and semiwrought form; common metals in foil form, namely, copper foils; alloys of common metals in foil form, namely, foils made of copper alloys; copper panels for circuit boards; copper clad laminates for use in the manufacture of printed circuits; foils of copper, for use in the manufacture of printed circuits; metal foam, for use in the manufacture of printed circuits; metal foam, namely, stabilized copper foam

Printed circuits