Core Viewpoint - The successful demonstration application of China's self-developed full ocean depth trace metal CTD winch system, "Haiwei CTD11000," during the 15th Arctic scientific expedition highlights the capability of domestic deep-sea winch systems for polar operations [1] Group 1: Technology Development - The "Haiwei CTD11000" was tested during the 15th Arctic scientific expedition, showcasing its operational capabilities in extreme polar environments [1] - The deep-sea and polar scientific winch system is essential for deploying and recovering deep-sea and polar investigation instruments, indicating its fundamental role in scientific research vessels [1] Group 2: Research and Application - The project addresses the higher requirements for scientific winch systems due to the unique operational environment and precise scientific needs of deep-sea and polar research [1] - Traditional metal armored CTD winch systems are inadequate for clean sampling of trace elements such as iron, zinc, manganese, cobalt, copper, lead, cadmium, and mercury, emphasizing the need for advanced technology [1] Group 3: Future Implications - The successful verification of the "Haiwei CTD11000" provides reliable technical support for China's marine scientific research endeavors in deep-sea and polar regions [1]