沃尔核材：控股子公司乐庭智联已完成单通道448G高速通信线样品的开发工作

Group 1 - The company has developed a single-channel 448G high-speed communication cable, which is currently being validated by key customers [2] - The development work was completed by the company's subsidiary, Letin Intelligent [2] - This advancement indicates the company's commitment to innovation in high-speed communication technology [2]