Core Viewpoint - The polyurethane sealant industry in China is facing significant challenges due to the high technical barriers and monopolization of the high-performance market by foreign companies, with over 90% of the high-end market dominated by international products. However, advancements in domestic technology and innovation are emerging, particularly from research institutions like Zhengzhou University, which have made breakthroughs in developing competitive products [1][7][8]. Group 1: Industry Definition and Characteristics - Polyurethane sealants are classified as high-grade elastic sealants, known for their excellent wear resistance, low-temperature flexibility, and good adhesion properties. They have a lifespan of 15-20 years and are suitable for dynamic joints, although they have limitations such as poor heat resistance and water resistance [2][7]. - Low-modulus polyurethane sealants are characterized by being single-component, non-flowing, solvent-free, and environmentally friendly, making them suitable for high-movement joints in construction applications [4][5]. Group 2: Current Industry Status - The demand for polyurethane sealants is increasing due to rapid urbanization and growth in the construction and automotive sectors. However, the technology for high-performance polyurethane sealants remains largely monopolized by foreign companies, limiting domestic development [7][8]. - From 2016 to 2024, China has filed a total of 589 patents related to polyurethane sealants, with a peak of 91 patents in 2019, indicating a shift from imitation to original innovation in the industry [8]. Group 3: Industry Chain - The polyurethane sealant industry chain includes upstream materials such as isocyanates and polyols, midstream production of sealants, and downstream applications in construction, transportation, and electronics [10]. - In the construction sector, polyurethane sealants are primarily used for waterproofing, sealing, insulation, and soundproofing, with increasing market demand driven by the industry's growth and environmental requirements [12]. Group 4: Competitive Landscape - Major companies in the polyurethane sealant industry include Chengdu Silica Technology Co., Ltd., Beijing Gaomeng New Materials Co., Ltd., and Hubei Huitian New Materials Co., Ltd., among others. These companies are focusing on research and development to enhance their product offerings and market presence [14][17]. - Beijing Gaomeng New Materials has a strong market position with a diverse product range and advanced production capabilities, including 37 production bases and a focus on high-performance adhesive materials [20][21]. Group 5: Industry Development Trends - The future of the polyurethane sealant industry in China is expected to focus on technological innovation, expansion of application scenarios, and environmentally friendly practices. The demand for high-precision sealing materials in electronics and aerospace is also anticipated to grow [24].

Summary of Key Points Overall Market Performance - The performance of the CSI 300 and ChiNext indices over the past year shows a significant decline, with the CSI 300 down by 32% and the ChiNext down by 16% [1]. Industry Performance - The top five performing industries yesterday included textiles and apparel (+1.448%), beauty and personal care (+1.014%), telecommunications (+0.971%), banking (+0.897%), and diversified industries (+0.742%) [1]. - Conversely, the bottom five performing industries were defense and military (-1.17%), non-ferrous metals (-0.866%), utilities (-0.801%), steel (-0.580%), and pharmaceuticals and biology (-0.537%) [1]. Communication Industry - The satellite internet construction in China is gradually taking shape, with significant developments in the commercial aerospace industry [10]. - On April 1, 2025, China successfully launched a satellite for internet technology testing, marking a step towards the integration of satellite and terrestrial networks [12]. - The "Thousand Sails Constellation" plan aims to deploy 648 satellites by the end of 2025 and 1,296 satellites globally by 2027, with a long-term goal of 15,000 satellites by 2030 [13]. Coal Mining Industry - China Jushi (600176.SH) reported a significant increase in Q4 2024 performance, with revenue reaching 42.2 billion yuan, a year-on-year increase of 22.4% and a quarter-on-quarter increase of 8.49% [16]. - The company’s glass fiber yarn sales reached a record high of 3.025 million tons in 2024, driven by structural optimization and market expansion [17]. Real Estate and Construction Industry - China Overseas Development (00688.HK) ranked first in equity sales and land acquisition, with a steady growth in commercial income [21]. - The company reported a revenue of 1,851.5 billion yuan in 2024, a year-on-year decrease of 8.6%, while its equity sales amounted to 3,107 billion yuan, a slight increase of 0.3% [22][23]. Food and Beverage Industry - China Feihe (06186.HK) achieved a revenue of 20.749 billion yuan in 2024, reflecting a year-on-year increase of 6.2%, with a proposed dividend of 0.3264 HKD per share [27]. - The company’s ultra-high-end product series continues to drive growth, with a focus on expanding its market share in the infant formula sector [28]. Chemical Industry - Shengquan Group (605589.SH) reported a revenue of 10.02 billion yuan in 2024, with a year-on-year increase of 9.87% [37]. - The company is expanding its high-frequency and high-speed resin varieties, indicating a robust growth trajectory [38]. Light Industry - Jiayi Co., Ltd. (301004.SZ) achieved a revenue of 2.836 billion yuan in 2024, a year-on-year increase of 59.8%, supported by strong customer relationships [31]. - The company’s overseas revenue growth is a significant driver of its overall performance [32].