LS Cable & System has completed construction of its fifth submarine cable plant in Donghae City, Gangwon Province, significantly boosting its high-voltage direct current (HVDC) submarine cables production capacity by fourfold. With this development, LS Cable & System now operates the largest HVDC cable production facility in Asia.
July 16, 2025

LS Cable & System has completed construction of its fifth submarine cable plant in Donghae City, Gangwon Province, significantly boosting its production capabilities. With this expansion, the company’s capacity for producing high-voltage direct current (HVDC) submarine cables has grown over fourfold compared to previous levels.
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The new facility is equipped with an advanced vertical continuous vulcanization (VCV) line, enhancing both production efficiency and supply reliability.
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With this development, LS Cable & System now operates the largest HVDC cable production facility in Asia, strengthening its position in the global market for large-scale submarine cable projects.