目前，国家大力实施"两重""两新"政策，加力扩围实施大规模设备更新，武汉市轨道交 通更新改造全面启动，通信系统改造位列其中，据地铁更新改造负责人介绍："轨道交通1号 线绿色化更新改造工程已启动实施，轨道交通2号线、3号线等线路的更新改造正逐步开展， 该标准的发布非常及时，能有效指导改造线路通信系统的建设及验收工作开展。"同时，该 负责人还表示："新标准与现行相关国标比较，充分考虑了武汉地铁实际情况，增加了集中 录音系统、安防系统、电磁环境、系统联调的相关检测项目，并结合当前5G技术发展，加 入了在地铁深度应用的相关内容等。新标准不仅满足了武汉地铁通信系统建设需要，而且契 合了轨道交通发展趋势。后续各改造线路的通信系统都将严格遵循新标准进行测试，确保地 铁运营过程中通信服务质量。" 城市轨道交通的通信系统工程规模大，系统设备多，是地铁运营的"神经系统"。据悉， 该标准的施行，是武汉地铁通信工程发展的关键转折点，为武汉地铁新建、续建、更新改造 通信工程建设保驾护航，助力我市"两重""两新"工作稳步开展。 武汉市市场监管局标准化处负责人表示，目前全国各省市均无针对地铁通信工程系统质 量检测的规范，该标准填补了这一空 ...

Core Insights - The State-owned Assets Supervision and Administration Commission (SASAC) reported that central enterprises achieved a total value added of 2.6 trillion yuan and a total profit of 646.27 billion yuan in the first quarter, with 26 enterprises experiencing profit growth exceeding 10% [1][2] Group 1: Economic Performance - Central enterprises played a crucial role as the "pillar" and "ballast" of the national economy, demonstrating resilience and strength amid complex economic conditions [2] - The National Grid Company significantly increased effective investment, completing fixed asset investments exceeding 90 billion yuan, a nearly 30% year-on-year increase, marking a historical high for the same period [2] - China Shipbuilding Group reported a 4% year-on-year increase in revenue and a 26.6% increase in total profit, with a 1.4 percentage point rise in profit margin [2] Group 2: Investment Trends - Central enterprises' fixed asset investment reached 851.3 billion yuan in the first quarter, showing significant year-on-year growth, with strategic investments in new industries increasing by 6.6% [4] - The total investment in major projects related to "Two Heavy" and "Two New" initiatives surpassed 1 trillion yuan, contributing to economic structure adjustment and new momentum conversion [4] Group 3: Future Goals - For 2025, SASAC set targets for central enterprises to achieve stable profit growth, maintain overall stability in asset-liability ratios, and improve net asset return rates and R&D expenditure intensity [5] - Central enterprises are encouraged to seize policy opportunities, expand effective investments, and focus on major projects that drive long-term benefits [5]