Prysmian Group operates in ASEAN with 4 plants in Malaysia, Indonesia and Thailand, as well as a regional distribution centre in Singapore. Prysmian combines global expertise with local insights to support energy transition and digital growth. OPTISEN serve the customers in Thailand and ASEAN countries, and also expanding the European market. OPTISEN design and produce a wide range of. This updated list ranks the 20 largest fiber-optic cable companies worldwide and summarizes what each vendor is best known for—core product lines, regional strengths, and typical project fit. 04 billion in 2024 and is projected to grow at a CAGR of 8.