On October 29, 2026, the Ministry of Natural Resources released marine economic data for the first three quarters. At the 2026 China Marine Economy Expo held during the same period, a deep-sea equipment company exhibited a domestically produced deep-sea robotic arm with an end-effector gripping payload of 455 kg. Researcher Zhang Jingjing confirmed that the titanium alloy arm body is manufactured using the latest 3D printing technology, and that the hydraulic swing cylinders and hydraulic valves in the actuator have all been localized. The robotic arm features an integrated structural design and continues to improve its level of domestically produced hardware and software, with the titanium alloy arm body formed through a 3D printing process. In underwater communications, domestically produced wireless optical communication technology has achieved high-bandwidth transmission capability at depths of 6,000 meters and achieved commercial application in the first half of 2026. Underwater robots carrying the equipment approach in-situ monitoring stations to complete large-capacity data transmission, replacing the previous method of retrieving and copying data by ship. The additive manufacturing-related facts explicitly mentioned in the news are: the titanium alloy body of the deep-sea robotic arm is manufactured using 3D printing technology, the robotic arm has entered the exhibition display stage, and the hydraulic components of the actuator have achieved localized supporting production.