周专题：轨道频谱稀缺驱动竞赛，国内低轨星座建设步入加速期 点击注册小程序 查看完整报告 特别申明： 本订阅号中所涉及的证券研究信息由光大证券研究所编写，仅面向光大证券专业投资者客户，用作新媒体形势下研究 信息和研究观点的沟通交流。非光大证券专业投资者客户，请勿订阅、接收或使用本订阅号中的任何信息。本订阅号 难以设置访问权限，若给您造成不便，敬请谅解。光大证券研究所不会因关注、收到或阅读本订阅号推送内容而视相 关人员为光大证券的客户。 报告摘要 通信卫星轨道主要分为地球静止轨道（GEO）、中地球轨道（MEO）和低地球轨道（LEO）。LEO轨道可降 低功率衰减、通信时延并简化终端设计，但需多星组网覆盖。相比GEO，LEO/MEO系统时延更小，且卫星体 积小、重量轻，利于一箭多星发射，降低星座构建成本和周期。低轨空间轨道和频段资源稀缺（低轨容量约6 万颗，星链计划占4.2万颗），L/S/C等优质频段殆尽，Ku/Ka频段协调难度大。根据国际电信联盟（ITU）规 则，运营商需在限定时间内（2年10%、5年50%、7年100%）完成卫星部署以锁定资源，导致竞争加剧。中国 星网"国网"、垣信"千帆"首批星已入轨，蓝箭"鸿鹄 ...

1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report - The scarcity of orbital spectrum drives competition, and the construction of domestic low - orbit constellations has entered an accelerated phase. With limited low - orbit space and spectrum resources and strict deployment time requirements from the ITU, competition for resource locking is intensifying. China is expected to see an accelerated launch of low - orbit satellites from 2025 - 2030. Representative constellations include "Guowang", "Qianfan", and "Honghu - 3". Shanghai Harbor, with its satellite energy system products, is expected to benefit from the accelerated development of low - orbit satellites [5]. - Leading waterproofing companies such as Yuhong, Beixin, and Keshu have raised prices on both civil construction and engineering products. In the context of the industry's "anti - involution", the collective price increase by leading enterprises may promote price recovery, but the degree of price repair remains to be seen due to weak demand [5]. - Investment suggestions include paying attention to companies like Honglu Steel Structure, China Jushi, Punan Co., Ltd., Hainan Huatie, Beixin Building Materials, China National Chemical Engineering, China State Construction, Shanghai Harbor, Sinoma Science & Technology, and Keda Manufacturing [5]. 3. Summary According to the Table of Contents 3.1 Week - Specific Topic: Orbital Spectrum Scarcity Drives Competition, and Domestic Low - Orbit Constellation Construction Enters an Accelerated Phase - **Satellite Orbit Types**: Communication satellite orbits are mainly divided into GEO, MEO, and LEO. LEO can reduce power attenuation and communication delay, simplify terminal design, and is suitable for multi - satellite networking. Compared with GEO, LEO/MEO has smaller delay, and satellites are smaller and lighter, facilitating multi - satellite launches and reducing constellation construction costs and cycles [5][7]. - **Resource Scarcity and Competition**: Low - orbit space and frequency spectrum resources are scarce. The total capacity of low - orbit satellites is about 60,000, and Starlink plans to send 42,000 satellites into low - orbit by 2027, accounting for about 70%. The L, S, C frequency bands are almost exhausted, and the Ku, Ka bands are difficult to coordinate. According to ITU rules, operators need to complete satellite deployment within a specified time to lock resources, intensifying competition [5][11]. - **Policy Support**: Since 2014, China has successively introduced policies to encourage private capital to participate in commercial space activities. In 2023, commercial space was included in strategic emerging industries, and it has been mentioned in the government work reports of 2024 and 2025, indicating strong policy support [16]. - **Global and Domestic Constellation Construction Status**: Globally, SpaceX leads in low - orbit constellation construction, with other countries' enterprises following. In China, constellations like "Guowang", "Qianfan", and "Honghu - 3" have formulated phased launch plans. Although the number of launches in 2024 did not meet expectations, the launch rhythm is expected to accelerate from the second half of 2025 [5][17][23]. 3.2 Profit Forecast and Valuation of Main Covered Companies The report provides profit forecasts, valuations, and investment ratings for multiple companies, including Hainan Huatie, Punan Co., Ltd., China Jushi, etc. EPS, P/E, P/B, and other indicators for 2024 - 2027 are presented, and most investment ratings are maintained [33]. 3.3 Weekly Market Review - **Industry Index Performance**: In the week from June 28th to July 4th, 2025, the building and building materials industries showed certain fluctuations. Among building sub - sectors, the garden engineering index had the highest increase at 2.20%, while among various industries, the steel index had a relatively large decline [38][40]. - **Infrastructure Public REITs Performance**: The report lists the closing prices, 52 - week highs and lows, weekly, monthly, year - to - date, 250 - day, and IPO - since price changes of multiple infrastructure public REITs. The average weekly increase was 1.07%, the average monthly increase was 1.31%, and the average year - to - date increase was 20.99% [46][47]. 3.4 Aggregate Data Tracking - **Real Estate Data**: The report presents data on real estate new construction, construction, completion, sales area cumulative year - on - year growth, land transaction area, and real estate transaction data from 2022 - 2025 [49][58][68]. - **Social Financing Data**: Data on monthly new social financing, new RMB loans, new corporate bond financing, etc., from 2022 - 2025 are provided [78]. - **Infrastructure Investment Data**: The cumulative year - on - year growth rates of narrow - sense and broad - sense infrastructure investment, as well as investment in power, transportation, and water conservancy industries from 2022 - 2025, are shown. The new contract signing data of eight major construction central enterprises from 2022Q1 - 2025Q1 are also presented [88][94]. - **Special Bond Issuance Data**: Data on monthly and cumulative new and replacement special bond issuance from 2022 - 2025 are provided [96]. 3.5 High - Frequency Data Tracking - **Cement Data**: Information on national PO42.5 cement average price, East China regional cement price, cement - coal price difference index, cement capacity utilization rate, and cement production monthly year - on - year growth rate is presented [107][114]. - **Float Glass Data**: Data on glass spot price, futures price, inventory, and daily melting volume are provided [115][117][119][122]. - **Photovoltaic Glass Data**: Information on soda ash price, 2mm photovoltaic glass price, inventory, and daily melting volume is presented [122][123][125]. - **Glass Fiber Data**: Prices of SMC roving, winding direct roving, injection roving, G75 electronic yarn, and glass fiber inventory are shown [128][129][132][134][138]. - **Carbon Fiber Data**: Data on carbon fiber average price, raw silk price, inventory, production, capacity utilization rate, gross profit margin, cost, and gross profit are provided [135][139][142][146][148][151][152]. - **Magnesia and Alumina Price Data**: Prices of large - crystal fused magnesia and alumina are presented [153][156]. - **Upstream Raw Material Price Data**: Prices of asphalt, waste paper, PVC, and HDPE are shown [159][160][162][163]. - **Physical Workload Data**: Prices of titanium dioxide and acrylic acid, high - machine rental rate, excavator working hours, and asphalt average capacity utilization rate are presented [167][168][170][173].

点击注册小程序 查看完整报告 特别申明： 本订阅号中所涉及的证券研究信息由光大证券研究所编写，仅面向光大证券专业投资者客户，用作新媒体形势下研究 信息和研究观点的沟通交流。非光大证券专业投资者客户，请勿订阅、接收或使用本订阅号中的任何信息。本订阅号 难以设置访问权限，若给您造成不便，敬请谅解。光大证券研究所不会因关注、收到或阅读本订阅号推送内容而视相 关人员为光大证券的客户。 今 日 聚 焦 【建筑建材】国内低轨星座建设加速，钙钛矿或成为降本突破口——低轨卫星行业研究系列之一 我国政策高度重视商业航天产业建设，国内"星网"、"千帆"等星座计划已开始批量发射卫星，低轨卫星发展节 奏有望显著提速。与国际先进水平相比，我国商业航天降本亟待突破，其中钙钛矿有望成为低轨卫星能源系统 的降本突破口。上海港湾前瞻性布局卫星领域以及钙钛矿相关业务，凭借先进的技术与可靠的产品，公司能源 系统产品已助力15颗卫星成功发射，40余套卫星电源系统及太阳帆板与结构机构在轨稳定运行。 （孙伟风）2025-06-19 您可点击今日推送内容的第1条查看 【互联网传媒】美股AI+云安全催化不断，AI推理需求驱动网络安全蓬勃发展——美股云计算行 ...