Chinese state-owned telecom firms are developing a $500 million undersea fibre-optic internet cable network that would link Asia, the Middle East and Europe to rival a similar US-backed project, four people involved in the deal told Reuters. This article explores China's leadership in the field of optical cable technology and its key role in promoting progress in various fields, including the economy, technology and military. As of 2024, China boasts the world's longest fibre optic cable network, with substantial investments made in. This guide ranks China's top 10 fiber optic cable manufacturers for 2025, based on market share, production capacity, innovation, and global reach. The list prioritizes companies with strong export performance (to 100+ countries) and compliance with international standards like ITU-T G. 652 and IEC. Author: Rujian Lin, Advisor, LUSTER LightTech Co. Only 44 landlocked countries out of nearly 200 countries Over 95% of international traffic is transmitted through. Since China's first submarine optical cable, which connected with Japan, launched in 1993, submarine optical cables have become the most important way that China connects with the rest of the world. The domestic optical value chain is also doubling.