25Q1建筑建材持仓小结：3月资金“高低切”，关键词是稳健、高股息、大市值。  水泥行业：涨价+降本修复利润，私企率先高分红意识提升；25Q2淡季价格预判回落，供给侧差查超 产如期执行。

A diaphragm pump is a positive displacement pump that uses a diaphragm (a flexible, membrane-like component) to move fluids. The diaphragm alternates between two chambers, creating a suction and discharge cycle. It is ideal for pumping viscous, corrosive, and abrasive liquids, slurries, and chemicals, offering benefits like leak-proof operation, self-priming, and the ability to handle toxic fluids without contamination. Diaphragm pumps are commonly used in industries such as chemical processing, water treatment, and oil and gas.

Epoxy resins are a versatile class of synthetic polymers known for their exceptional adhesive properties, mechanical strength, and chemical resistance. Defined by their ability to form cross￾linked networks upon curing, these resins are used in various applications across various industries. Epoxy resin is superior to other resins because it has low shrink during cure and excellent moisture and chemical resistance. It is impact-resistant, has good electrical and insulation properties, and has a long shelf life.

Global Filament Wound Composites Market - Growth Trends and Forecasts (2024 - 2029)

2025 年 3 月行业整体价差偏弱，美国关税政策或扰动需求侧 25 年 3 月末 CCPI-原油价差约 439，处于 2012 年以来 30%以下分位数， 受油价相对高位以及供需偏弱等影响价差仍有承压。3 月提价产品主要系磷 化工产品、脂肪醇等供给端受限的品种。我们认为，短期受美国关税政策影 响，行业下游需求跟进或存一定扰动；中期而言国内经济恢复以及亚非拉等 地区需求增长，终端需求有望逐步迎来改善，叠加供给侧自我调整，25H2 或迎复苏起点，成本减压及需求改善的下游环节或率先复苏。

The study tracks the revenue accrued from the sale of Composite testing solutions across the globe. All the market data and forecasts are reported in terms of revenue (USD million) from 2022 to 2029, considering 2023 as a base year and 2024 to 2029 as the forecast period

Acrylic sheet or plexiglass is a thermoplastic sheet made of synthetic polymers. It comes in transparent or colored form and is widely used as an excellent alternative to traditional glass in various applications.

钢铁供给侧优化重启的推演 2005 年后中国钢铁行业供给过剩常态化，期间供、需政策对行业利润改善 有积极作用，但供给侧优化政策效果更优。回顾 2016-2020 年和 2021 年钢 铁行业两轮供给侧优化情境，2024 年钢铁行业形势严峻程度堪比 2015 年， 或开启新一轮供给侧优化。我们认为政策应聚焦减产，力度要大且需有数年 的连贯性，效果或更佳。2024 年以来政府多方积极发声，强调严控钢铁产 量，防止“内卷”，进一步预示供给侧优化重启或渐近。若钢铁减产 3000-5000 万吨，我们认为吨钢净利润提升约 200 元，优先投资年化理论 PE 估值便宜 的公司，例如首钢股份、新兴铸管、宝钢股份、中信特钢、南钢股份等。

11 月地缘局势反复，OPEC+再次延长三层次减产，短期供给仍将显宽松 在北半球进入季节性淡季、OPEC+延长额外自愿减产以及俄乌冲突反复的 共同影响下，11 月国际油价整体震荡运行。12 月初 OPEC+宣布延长三层 减产措施，叠加中东地缘政治局势突变，以及欧盟将对俄罗斯石油出口实施 新一轮制裁，12 月 23 日 WTI/Brent 期货价格分别收于 69.24/72.63 美元/ 桶，较月初上涨 1.7%/1.1%。我们认为中国石油需求、OPEC+协同减产意 愿以及美国供应增速仍为 24Q4-25H1 的重要边际影响因素，IEA 预计若 2025 年 OPEC+继续维持额外自愿减产，全球供应仍将过剩 95 万桶/天。油 价下跌企稳后优质炼化企业、具备成长能力的高分红企业或将显配置机遇。

Cellular glass is a lightweight and rigid insulating material made primarily from recycled glass. It is produced in the form of rigid boards, blocks, or granules, and it is widely used primarily for its excellent thermal insulating properties and resistance to moisture and fire.