In a significant scientific milestone, China has successfully produced high-purity C276 metal strips domestically for the first time. This achievement was spearheaded by a research team led by Rong Lijian from the Institute of Metal Research, Chinese Academy of Sciences. C276 is a critical material used in the production of second-generation high-temperature superconducting tapes, which are essential components in controllable nuclear fusion devices, often referred to as ‘artificial suns.’ The newly developed metal strips exhibit exceptional mechanical strength and deformation capabilities, marking a crucial step forward in the advancement of superconducting technology. This breakthrough not only reduces China’s reliance on imported materials but also strengthens its position in the global scientific community. The successful production of these metal strips is expected to accelerate progress in nuclear fusion research and related high-tech industries, paving the way for future innovations in energy and materials science.