【Copper high-speed connector concept hits bottom and rebounds, Wolfram Core Material sees limit up】The concept of copper high-speed connectors hit bottom and rebounded, Wolfram Core Material saw limit up for 5 days in a row, Shenglan Stock rose more than 10%, Jingda Stock briefly touched the limit up, and companies such as Zhelong Interconnect, Dingtong Technology, and Jin Xinuo surged. On the news front, Nvidia's GB200NVLink Switch and Spine, with 72 Blackwell GPUs connected by NVLink, feature 5000 NVLink copper cables. Analysts point out that Nvidia's new GPU chips use high-speed copper cables for electrical connections, which helps reduce losses, costs, and improve heat dissipation efficiency.