Core Insights - The ethane market is experiencing supply tightness, leading to increased production costs for downstream industries, which may accelerate industry reshuffling and provide opportunities for leading companies with integrated supply chains [1] Group 1: Industry Overview - Ethane is a key raw material in the production of ethylene, which is essential for plastics [2] - The supply-demand imbalance for ethylene oxide is expected to intensify from 2025 to 2029, concentrating profit distribution rights further upstream [2] - The current production of ethylene oxide in China primarily relies on naphtha cracking, while the ethane-mixed process faces shutdowns, allowing naphtha-based production to regain pricing power [4] Group 2: Company Strategies - Aoke Co., Ltd. (奥克股份) is the first listed company in the field of deep processing of ethylene oxide, holding a 40% market share in the domestic market for polyether monomers, and is expected to strengthen its leading position during price increases due to its 211 patented technologies and large-scale production advantages [2] - Hongqiang Co., Ltd. (红墙股份) is accelerating its national layout through a dual business model of "additives + fine chemicals," with a 150,000-ton/year polyether monomer project expected to commence production soon, enhancing cost control capabilities [2] - Hongqiang Co., Ltd. plans to start a 320,000-ton/year fine chemical project, which includes the production of various derivatives, thereby achieving industry chain integration and improving profitability and resilience against cyclical fluctuations [3] Group 3: Market Dynamics - The industry is expected to undergo a deep reshuffle by 2028, with smaller companies likely to exit due to cost pressures, leading to a further concentration of market share among leading firms [4] - Companies with low-cost procurement capabilities for ethylene oxide will have a competitive advantage in the upcoming industry reshuffle [4] - Strategic partnerships, such as Hongqiang Co., Ltd.'s collaboration with China National Offshore Oil Corporation (中海壳牌) for ethylene oxide procurement, are crucial for reducing transportation costs and securing lower purchase prices [4]

内容概要：环氧乙烷，Ethylene Oxide，简称EO，又称氧化乙烯，是一种重要的有机化工原料和中间 体，也乙烯工业衍生物中仅次于聚乙烯和聚氯乙烯的有机化工原料。数据显示，2010年我国环氧乙烷产 能约为126万吨，伴随乙烯工业体系快速扩张及炼化一体化项目落地，至2019年产能激增至479万吨，实 现年均复合增长率16%的快速发展。其后，在乙烯炼化一体化装置持续扩产推动下，我国环氧乙烷产能 扩张趋势得以延续，2020-2023年间保持14%以上的增速。至2024年，我国环氧乙烷产能达到944万吨， 同比增长8.51%，增速虽有所放缓但仍保持稳健增长。而在生产方面，随着聚羧酸减水剂单体、非离子 表面活性剂等下游市场发展，近年来我国环氧乙烷行业产量整体呈现上升态势，据统计，2024年已从 2019年的384.7万吨增长至524万吨。 相关上市企业：中国石化（600028）；中国石油（601857）；中国三江化工（02198）；红墙股份 （002809）；奥克股份（300082）；卫星化学（002648）；联泓新科（003022）等 相关企业：中国石化海南炼油化工有限公司；盛虹控股集团有限公司；恒力石化（大连） ...

1.保障了在复杂环境（多雨、地形复杂）及工期紧张条件下的混凝土施工质量与进度。 项目概况： 镇康县帮东河水库最大坝高达87.2米，总库容1386万立方米。本次浇筑的大坝面板混凝土总量约9679立 方米，采用分块设计（共29块），单块最大浇筑量超600立方米，总历时74天。 解决方案： 本项目位于地形复杂、气候多雨地区，面临施工窗口期紧张等挑战，对混凝土性能提出了严格要求：须 具备优异的工作性、强度发展能力、耐久性（特别是抗渗和抗冻性能）以及良好的体积稳定性（抗裂 性）。 中建新材通过精准应用高性能聚羧酸减水剂，成功确保了混凝土在无轨滑模工艺下的工作性和可泵性， 实现了一次连续浇筑成型，大幅提升了施工效率。 本项目的成功实践充分证明了中建新材在水利水电应用场景下，解决复杂工程痛点中的核心价值： 近日，由中建新材参建的云南省"十四五"规划重点水利工程——临沧市镇康县帮东河水库项目迎来关键 里程碑，全长279米的大坝面板混凝土浇筑圆满完成最后一仓收面作业，为后续下闸蓄水和全面竣工奠 定了坚实基础。 2.显著提升了混凝土的综合性能（高强、高抗渗、高抗冻、高抗裂），确保大坝面板这一关键结构的长 期安全与耐久。 3.支撑 ...