China Mobile-Led and Invested SEA-H2X International Submarine Cable Project Launches Commercially, Paving the Way for Digital and Intelligent Interconnectivity in Asia-Pacific

HONG KONG , July 22, 2026 /PRNewswire/ -- On 22 July, the Southeast Asia-Hainan-Hong Kong (SEA-H2X) international submarine cable, led and invested in by China Mobile, completed the system acceptance test and launched commercially. As the project's largest investor, China Mobile holds key management responsibilities and continues to play a driving role in its execution.

The SEA-H2X international submarine cable spans approximately 5,746 kilometers, featuring eight fiber pairs along the trunk and a system design capacity exceeding 200 Tbps. It connects Hainan, China, Hong Kong, China, the Philippines, Thailand, and Singapore. The project employs industry-leading open cable access technology (Open Cable) with spectrum sharing capabilities. It also incorporates advanced core submarine equipment to deliver ultra-high transmission capacity, while effectively enhancing operational security, service configuration agility, and reliability in complex networking environments.