铜冠铜箔：公司开发的高频高速铜箔可应用于不同传输速率的服务器、数据中心、交换机等5G通信技术等领域

Group 1 - The company, Tongguan Copper Foil, has confirmed that its high-frequency and high-speed copper foil can be applied in various fields, including servers, data centers, and switches, particularly in 5G communication technology and new smart devices for the Internet of Things [2]