Archive · 13 Nov 2025
China Mobile Completes Hong Kong Landing for SEA-H2X Submarine Cable
Imagine a super-fast internet highway being built under the ocean!
China Mobile is building a big underwater cable called SEA-H2X that will connect different countries in Asia.
They just finished putting the part of the cable that lands in Hong Kong into the ground.
This special cable is very long, about 6,000 kilometers, and can carry a huge amount of information really quickly.
It will help make internet connections better and faster between places like China, the Philippines, Thailand, and Singapore.
This will help businesses and people in these areas share information more easily and will be a big help for the growth of digital services and online businesses in the region.
The whole project should be finished by the end of next year, 2025.
China Mobile announced the successful landing of the Hong Kong segment of the SEA-H2X international submarine cable in Tseung Kwan O.
The SEA-H2X cable spans approximately 6,000 kilometers and is designed for a capacity exceeding 200 Tbps.
The project connects Hainan, Hong Kong, the Philippines, Thailand, and Singapore, utilizing open cable access technology.
China Mobile is the largest investor, securing at least 100 Tbps of dedicated bandwidth.
The cable aims to strengthen regional connectivity, support digital economic development, and enhance data transfer capabilities.
- Who
- China Mobile, as the initiator, investor, and landing party for the Hong Kong segment
- What
- Successfully landed the Hong Kong segment of the SEA-H2X international submarine cable project.
- When
- November 12, 2025
- Where
- Tseung Kwan O, Hong Kong
- Why
- To enhance regional connectivity, support digital economy growth, and establish a direct data artery between Hainan, Hong Kong, and Southeast Asia.
- Project Name
- Southeast Asia-Hainan-Hong Kong (SEA-H2X)
- Cable Length
- Approximately 6,000 kilometers
- Capacity
- Over 200 Tbps
- Key Landing Point
- Tseung Kwan O, Hong Kong
- Projected Completion
- End of 2025
- Key Technology
- Open Cable access technology with spectrum sharing