18 -- China Unicom Group, one of the country's largest telecommunications operators, will build Cambodia's first state-owned submarine optical fiber cable with a large capacity for international communications. [CAMBODIA NEWS] Phnom Penh authorities have launched an extensive project to relocate overhead fiber optic cables underground across 40 major streets in the capital, starting with Street 466 and Preah Trasak Paem Boulevard (Street 63) in Tonle Bassac commune. On February 11, 2025, Phnom Penh Deputy. (Yicai) Oct. The nearly 3,000-kilometer submarine optical fiber cable will run from Hong. China Unicom Group, one of China's major telecommunications operators, has revealed plans for the construction of a nearly 3,000-kilometer-long submarine optical fiber cable, which will span from Hong Kong to Sihanoukville in southern Cambodia. This project represents Cambodia's inaugural. The Sihanoukville-Hong Kong Submarine Cable connects Sihanoukville, Cambodia and Hong Kong, spanning approximately 3000km across the South China Sea., Ltd (CFOCN) has requested the Ministry of Public Works and Transport (MPWT) for approval to undertake a project involving the drilling and installation of new fibre optic cables across Cambodia's nine major provinces.