固定收益月报 超长债博弈空间有限，关注二永债相对价值 3 月信用月报 核心结论 年初以来，长端及超长端信用债整体表现较优。除年初配置盘进场、摊余债基 集中开放带来的信用债配置需求以外，交易盘的参与亦是推动信用利差快速收 窄的关键因素。据机构净买入数据，年初至今，其他资管机构为 7-10Y 信用债 最大买入机构，其次为保险（92.8 亿元）和基金（20.6 亿元）。 （1）今年保险机构对 7-10 年期信用债的净买入力度显著强于去年同期，除了 该品种配置价值显现之外（年初信用利差、期限利差处于近年高位），还与分红 险领跑保险"开门红"有关。 （2）基金于 2 月对 7-10Y 信用债转为净买入，或主要由于 1 月信用利差快速压 缩背景下，5Y 及以内利差进一步向下压缩的空间不足，而超长信用债性价比性 价比高，叠加节前最后一周信用债配置情绪较好，基金入场博弈超长端信用债的 交易性机会。 （3）此外，年初以来公募基金对 5Y 以内信用债的买入力量较强，远超季节性。 分期限来看，3-5Y 信用债为基金配置主力，净买入规模超 2000 亿元。摊余定 开债基集中开放为信用债带来增量配置需求，成为支撑本轮信用利差快速压缩的 ...

中国中铁 20260302 摘要 中国中铁积极拓展矿产资源，虽部分项目受价格或谈判因素影响未落地， 但在内蒙古复兴城银铅锌多金属矿区取得突破，该项目由中国中铁参股 30%，预估银金属量约 5,105 吨，锌金属量 23 万吨，铅金属量 13 万 吨，镓接近 500 吨。 国资委窗口指导将矿产资源列为中国中铁"培育主业"，未来三年可按 主业口径投资，降低投资约束。公司将矿产资源业务提升为转型升级支 撑，境内外同步推进，重点关注贵金属、有色金属及黑色金属，目前跟 踪十几个重点金属矿山项目。 中国中铁在"资源换基建/工程换资源"模式上积累了丰富经验，尤其在 海外市场如刚果（金）铜钴项目上获得认可。国内则可结合债权等工具 与地方政府谈判，形成多元化的资源获取路径，一级市场竞拍占比约 10%，二级市场股权收购占比 80%-90%。 中国中铁承认在后备资源量方面与头部矿业公司存在差距，但已将矿产 资源列为培育主业，并计划在"十五期间"投入更多资金以提升后备资 源储量，缩小与紫金矿业等领先企业的差距。 Q&A 中国中铁下属中铁资源参股 30%的企业与其他投资者共同取得内蒙古银矿探矿 权，是否意味着未来将持续对外扩张投资？矿 ...

Investment Performance - The gold stock portfolio for February achieved a return of +2.07%, with a cumulative annual return of +17.8% as of February 28, 2026, outperforming the Shanghai Composite Index and CSI 300 Index by 1.98 percentage points and 1.48 percentage points respectively [1] - The top-performing sectors in the Shenwan first-level industry classification were comprehensive (+18%), steel (+10%), and building materials (+8%) [1] March Investment Strategy Outlook - The A-share market is expected to remain volatile due to valuation levels in certain sectors and external geopolitical influences, with a notable focus on value assets represented by free cash flow indices [2] - The upcoming National People's Congress is anticipated to increase thematic investment opportunities, making macro narratives a key driver for market direction [2] - It is recommended to select stocks with solid fundamentals and low implied expectations in their current valuations, while maintaining a balanced portfolio to avoid overexposure to any single sector [2] Recommended Gold Stocks for March - Utilities: Guiguan Electric Power (600236.SH), Power Equipment: Dongfang Electric (600875.SH) [3] - Electronics: Helin Micro-Nano (688661.SH), Media: Kaiying Network (002517.SZ) [3] - Chemicals: Sanyou Chemical (600409.SH), Xin Fengming (603225.SH) [3] - New Materials: Huafeng Aluminum (601702.SH), Building Materials: China Jushi (600176.SH) [3] - Construction: Honglu Steel Structure (002541.SZ), Transportation: China Merchants Energy Shipping (601872.SH) [3] Company-Specific Insights Guiguan Electric Power (600236.SH) - Plans to acquire a group company in Tibet for 2 billion yuan at 1.1 times PB, gaining access to hydropower resources expected to be operational by 2026-2027 [4] - The company is positioned to support the group's mission in Tibet and is expected to benefit from the national clean energy demonstration base [4] Dongfang Electric (600875.SH) - Increased global electricity demand driven by AI capital investment is expected to boost demand for gas turbines and other power equipment [5] - The company is well-positioned in nuclear power, pumped storage, solar thermal, and hydrogen energy sectors, with leading technology capabilities [5] Helin Micro-Nano (688661.SH) - The chip testing industry is entering a "volume and price rise" cycle due to increased complexity and testing duration [7] - The company is expected to gain market share as supply chain constraints affect competitors, leading to improved performance [8] Kaiying Network (002517.SZ) - The company has secured exclusive licensing for popular games, with a daily active user count nearing 500,000, indicating strong community engagement [10] - AI initiatives are progressing, with new interactive applications expected to launch in early 2026 [10] Sanyou Chemical (600409.SH) - Cotton price increases are expected to drive up demand and prices for viscose, with significant reductions in cotton planting area impacting supply [12] - The company is currently trading at a historical low PB of 1.2 times, indicating a high safety margin [13] Xin Fengming (603225.SH) - The polyester filament market is entering an upcycle, with low inventory levels and expected demand recovery post-holiday [15] - Anticipated profitability improvements in the PTA sector due to limited new capacity and stable downstream demand [15] Huafeng Aluminum (601702.SH) - The company is positioned to benefit from the growing demand for aluminum thermal materials in the electric vehicle sector [18] - The trend of "aluminum replacing copper" is expected to accelerate, opening new market opportunities [18] China Jushi (600176.SH) - The company is at a potential market turning point for electronic fabrics, with prices expected to rise significantly [19] - High-end electronic fabric certifications are progressing faster than anticipated, indicating strong future demand [19] Honglu Steel Structure (002541.SZ) - The company is expected to achieve a production volume of 5.021 million tons in 2025, with a utilization rate of approximately 96.55% [20] - The integration of advanced automation and project management systems is expected to enhance production efficiency [20] China Merchants Energy Shipping (601872.SH) - The oil shipping market is expected to perform strongly due to favorable fundamentals and geopolitical factors [21] - The company is the world's largest owner of VLCCs, positioning it well to benefit from the improving oil and dry bulk shipping markets [21]

中国中铁 20260228 摘要 中国中铁 2026 年整体经营基本盘保持稳定，新签合同额同比增长 1.3%，达 358 亿元。国内新签合同额占比 99.2%，同比略有下降；海 外新签合同额增长显著，同比增长 16.5%，对整体增长贡献持续提升。 公司积极拓展多元业务，包括水利水电、能源管网、智能建造、算力设 施等新基建领域，并向全生命周期服务转型，从施工建设向运营、维护、 城市更新等存量领域延伸，推动业务向价值链高端跃升。 公司通过一级市场竞拍、二级市场兼并及与政府合作等方式积极布局矿 产资源，内蒙古复兴屯银铅锌多金属矿项目为与中国黄金合作获取，公 司持股 30%，竞拍价格 78.7 亿元，预计 5 年左右投产。 2024 年矿产板块净利润贡献约 30 亿元，占公司净利润约 11%。预计 2025 年随着金属价格上行，矿产板块净利润贡献将进一步提升至 40 亿 元以上。 公司铜的权益资源储量约 300 多万吨，权益产量约 15 万吨。铜价每上 涨 1 万元/吨，对应的权益净利润弹性约 15 亿元。钴年产能约 5,000 吨， 权益比例约 50%。 Q&A 2025 年公司新签订单整体表现如何，国内与海外分别 ...

Core Viewpoints - The report emphasizes the importance of energy security amid the US-Iran conflict and highlights investment opportunities in the construction sector during the upcoming Two Sessions, focusing on major projects, urban renewal, and new productivity infrastructure [1][4]. Section Summaries 1. Investment Opportunities Ahead of the 2026 Two Sessions - The report predicts that the Two Sessions will continue the "proactive fiscal policy + structural monetary easing" approach, with three main focuses: major projects, urban renewal, and new productivity infrastructure. Infrastructure investment growth is expected to rebound from approximately -1% in 2025 to around 6.2% in 2026, becoming a key driver for stabilizing fixed asset investment [12][13]. 2. Mainline Selection - Structural recovery in infrastructure investment is anticipated, particularly in regions like Sichuan, Xinjiang, and Tibet, supported by central government funding. The report suggests monitoring order fulfillment and company PE levels, with a focus on companies such as Sichuan Road and Bridge, Xinjiang Communications Construction, and others [20][22]. 3. Timing Theme Investments - The report identifies urban renewal, underground pipelines, environmental codes, and the Middle East situation as key investment themes. It highlights the importance of urban renewal policies and the expected increase in demand for underground pipeline construction, with over 700,000 kilometers planned for renovation during the 14th Five-Year Plan, requiring over 5 trillion yuan in new investment [4][12]. 4. Left-Side Recommendations - Major construction state-owned enterprises are currently undervalued and have low institutional holdings. The report suggests focusing on companies with strong cash flow management and stable dividend policies, such as China State Construction, China Railway Construction, and others [4][20]. 5. Investment Recommendations - The report recommends focusing on energy security due to escalating US-Iran tensions, with specific suggestions for companies in chemical engineering, nuclear power, and oil and gas sectors. It also emphasizes the importance of urban renewal and underground pipeline projects, recommending companies like China State Construction and China Communications Construction [4][24]. 6. Key Company Valuations and Financial Analysis - The report provides a detailed valuation and financial analysis of key companies in the construction sector, indicating a generally positive outlook with buy ratings for major players such as China State Construction, China Railway, and others, reflecting their potential for growth and recovery [5][18].

Investment Rating - The report maintains a "Strong Buy" rating for the construction decoration industry, indicating a positive outlook for investment opportunities in this sector [3]. Core Insights - The report highlights the relaxation of real estate purchase restrictions in Shanghai, which is expected to boost housing demand and benefit leading cyclical companies [15][16]. - It emphasizes the importance of the upcoming Two Sessions in March 2026, which may introduce supportive policies for strategic engineering projects and new productivity sectors [16]. - The report suggests focusing on construction state-owned enterprises for recovery opportunities and transformation into new business lines [15][16]. Summary by Sections Industry Viewpoints and Investment Recommendations - The construction decoration index increased by 4.97%, outperforming the overall A-share index by 3.86 percentage points [14]. - The report recommends three main investment lines: 1. Focus on state-owned enterprises for recovery and transformation opportunities [22]. 2. Invest in high-demand sectors such as tunneling, civil explosives, and geotechnical engineering [22]. 3. Explore new economic directions like commercial aerospace, low-altitude economy, computing power, and AI [22]. Market Performance - The construction decoration sector showed significant gains, with individual stocks like Roman Shares rising by 37.70% and China Railway by 14.55% [28]. - The report notes that the issuance of special bonds has accelerated, with a cumulative net financing of 7,461 billion yuan as of February 27, 2026, which is higher than the same period in the previous two years [17][18]. Company Dynamics - Key company updates include: - China Railway Construction reported a revenue of 100.5 billion yuan for 2025, a slight decrease of 0.01% year-on-year [36]. - Donghua Technology achieved a revenue of 100.2 billion yuan, marking a 13.12% increase year-on-year [36]. - Honglu Steel Structure announced a reduction in the conversion price of its convertible bonds from 32.08 yuan to 21.99 yuan per share [36]. Industry Valuation - As of February 27, 2026, the price-to-earnings ratios (PE) for various construction sub-sectors are as follows: - Housing construction: 6.41x - Decoration: -28.12x - Municipal engineering: 8.35x - Garden engineering: -12.39x - Steel structure: 39.78x - Chemical engineering: 13.14x - International engineering: 13.49x - Other professional engineering: 67.05x - Engineering consulting services: 51.44x [37].

今年以来上海建工已公布的国际专利申请3个，较去年同期减少了50%。结合公司2025年中报财务数 据，2025上半年公司在研发方面投入了30.93亿元，同比减22.99%。 数据来源：企查查 以上内容为证券之星据公开信息整理，由AI算法生成（网信算备310104345710301240019号），不构成 投资建议。 证券之星消息，根据企查查数据显示上海建工（600170）公布了一项国际专利申请，专利名为"一种敷 设施工中海缆张力测量方法及装置"，专利申请号为PCT/CN2024/127002，国际公布日为2026年2月26 日。 专利详情如下： 图片来源：世界知识产权组织（WIPO） ...

中国建筑国际集团有限公司是一间主要从事建筑业务的投资控股公司。该公司主要从事建筑业务、基建 项目投资、经营收费道路、项目监理服务及外墙工程业务及其他。另外，该公司还从事工业厂房的改 造、提供项目监理服务、建筑材料的销售、机械及投资物业的租赁。 以上内容为证券之星据公开信息整理，由AI算法生成（网信算备310104345710301240019号），不构成 投资建议。 证券之星消息，2月27日南向资金增持48.6万股中国建筑国际（03311.HK）。近5个交易日中，获南向资 金增持的有3天，累计净增持217.4万股。近20个交易日中，获南向资金增持的有12天，累计净增持 568.97万股。截至目前，南向资金持有中国建筑国际（03311.HK）5.18亿股，占公司已发行普通股的 9.8%。 ...

证券日报网讯 2月27日，中国交建在互动平台回答投资者提问时表示，公司股价受宏观经济、行业周 期、市场情绪等多重因素影响。公司高度重视市值管理工作，并清醒认识到在价值创造、业务结构转型 升级、市场预期管理等方面仍有提升空间。下一步公司将持续加强管理等各方面工作。 （文章来源：证券日报） ...

上交所本周对158起拉抬打压、虚假申报等 证券异常交易行为采取了自律监管措施，对 *ST岩石、 *ST 正平、 *ST精伦等异常波动退市风险警示股票，以及 中韩半导体ETF等溢价较高的基金进行重点监控， 对7起上市公司重大事项等进行专项核查，向证监会上报涉嫌违法违规案件线索1起。 ...