The largest cable manufacturer globally is the Prysmian Group, headquartered in Milan, Italy. Prysmian is a clear industry leader specializing in the design, development, and manufacture of heavy-duty underground and submarine electric power transmission cables, high-voltage direct current (HVDC) systems, optical fiber telecommunication wires, and advanced cabling infrastructure supporting global renewable energy grids and modern data centers. Through major strategic corporate acquisitions over the years—such as General Cable and Encore Wire—the enterprise has expanded its manufacturing footprint significantly across North America, Europe, and international markets.