四会富仕（300852.SZ）12月4日在投资者互动平台表示，公司主营业务为PCB的研发生产与销售，部分 PCB产品应用于通信领域。 （文章来源：每日经济新闻） 每经AI快讯，有投资者在投资者互动平台提问：公司有高端光通信收发模块的研发、设计、封装、测 试和销售等技术和业务布局吗？公司可以为云数据中心客户提供高速光模块吗？公司有为电信设备商客 户提供5G前传、中传和回传光模块以及为城域网、骨干网和核心网传输光模块等应用领域提供高端综 合解决方案吗？ ...

Core Viewpoint - Beijing's telecommunications infrastructure has completed the IPv6 transformation across its backbone, metropolitan, and access networks, indicating a significant advancement in digital infrastructure [1] Group 1: Infrastructure Development - All backbone, metropolitan, and access networks of Beijing's telecommunications companies have completed the IPv6 upgrade [1] - Newly constructed gigabit optical networks and 5G networks have fully implemented IPv6 deployment [1] - Major commercial websites in Beijing now support IPv6 access [1]