HENGTONG has invested and established world-class production bases for extra-high-voltage electrical cables and undersea cables, and introduced a full set of world’s top equipment for extra-high-voltage cables and submarine cables. It owns a 180-meter-high VCV tower, the highest in Asia, and a submarine cable terminal that can accommodate two 10,000-DWT ships.  HENGTONG has also independently developed the high-voltage (500 kV), large-cross-section (2,500 mm2), and long-spanning (over 50 km) XLPE optical fiber composite submarine wires, flexible and long high-voltage DC submarine composite wires (±320kV) and flexible joints of submarine cables, all of which have reached the top level in the world. The “ultra-length feeding repeaterless submarine optical cable” of HENGTONG breaks the bottleneck in the domestic market and becomes an alternative of imported products.