ZTT Marine Industry Group

Zhongtian Technology Submarine Cable Co., Ltd., is a pioneering leader in submarine cable technology. ZTTSC specializes in the research, design, and manufacturing of high-voltage AC and DC submarine cables, umbilical cables, dynamic cables, and bundled solutions.

With three operational subsea cable factories and two more under construction, along with two underground cable hubs in Nantong, China, and Istanbul, Türkiye (Demirer Kablo), ZTTSC delivers next generation cable solutions to meet growing global demand. Today, ZTTSC serve more than 160 markets worldwide, providing cutting edge cable systems for energy infrastructure.

Product Portfolio

•             HVAC Submarine Cables: 110kV, 220kV, 330kV, 500kV

•             HVDC Submarine Cables: ±160kV, ±200kV, ±320kV, ±400kV, ±525kV

ZTTSC provides end-to-end EPCI services, ensuring seamless execution of offshore energy projects. The company excels in the renewable energy and Oil & Gas industries, offering high performance solutions for offshore wind and subsea power transmission.

Innovation & Sustainability

Backed by state-of-the art R&D facilities, ZTTSC continuously advances cable technology for superior performance and efficiency. In 2019, it received China’s highest award for Quality and Management, reinforcing its industrial leadership.

ZTTSC is fully dedicated to the Global Net Zero initiative, targeting carbon peak by 2030 and carbon neutrality by 2050. Since 2023/24, it has earned a B-score on the CDP and SBTi, demonstrating its commitment to environmental responsibility.

In line with industry demand, ZTTSC has achieved above-average certifications for climate change, EcoVadis, and CyberVadis, reflecting its commitment to sustainability, ethical business practices, and cybersecurity.

Our solutions power offshore wind, oil and gas, and island interconnection projects, thereby accelerating the transition to sustainable energy.

Through strategic R&D and global collaborations, ZTTSC remains at the forefront of subsea cable innovation.