国泰海通证券股份有限公司 关于江苏联瑞新材料股份有限公司 科创板向不特定对象发行可转换公司债券 之 发行保荐书 保荐机构（主承销商） （中国（上海）自由贸易试验区商城路 618 号） 二〇二五年九月 声 明 本保荐机构及保荐代表人根据《中华人民共和国公司法》（以下简称《公司 法》）、《中华人民共和国证券法》（以下简称《证券法》）、《证券发行上市 保荐业务管理办法》（以下简称《保荐管理办法》）、《上市公司证券发行注册 管理办法》（以下简称《注册管理办法》）、《上海证券交易所科创板股票上市 规则》（以下简称《上市规则》）等有关法律、行政法规和中国证券监督管理委 员会（以下简称中国证监会）、上海证券交易所的规定，诚实守信，勤勉尽责， 严格按照依法制订的业务规则、行业执业规范和道德准则出具本发行保荐书，并 保证所出具文件的真实性、准确性和完整性。 如无特殊说明，本发行保荐书中的简称或名词释义与《江苏联瑞新材料股份 有限公司向不特定对象发行可转换公司债券之募集说明书》一致。 3-1-1 | 声 | 明 1 | | --- | --- | | 第一节 | 本次证券发行基本情况 3 | | | 一、本次证券发行保荐机构名称 ...

证券代码：688300 证券简称：联瑞新材 公告编号：2025-033 江苏联瑞新材料股份有限公司 关于向不特定对象发行可转换公司债券申请文件 审核问询函回复的提示性公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述 或者重大遗漏，并对其内容的真实性、准确性和完整性依法承担法律责任。 江苏联瑞新材料股份有限公司（以下简称"公司"）于 2025 年 8 月 27 日收 到上海证券交易所（以下简称"上交所"）出具的《关于江苏联瑞新材料股份有 限公司向不特定对象发行可转换公司债券申请文件的审核问询函》（上证科审（再 融资）〔2025〕106 号）（以下简称"《审核问询函》"）。上交所审核机构对 公司向不特定对象发行可转换公司债券申请文件进行了审核，形成了首轮问询问 题。 公司按照要求会同相关中介机构就《审核问询函》提出的问题进行了认真研 究和逐项落实，现根据相关要求对《审核问询函》回复进行公开披露，具体内容 详见公司于同日在上海证券交易所网站（www.sse.com.cn）披露的《关于江苏联 瑞新材料股份有限公司向不特定对象发行可转换公司债券申请文件的审核问询 函之回复报告》等相关文件。 公司 ...

Market Overview - On September 19, the non-metal materials sector rose by 1.33% compared to the previous trading day, with Tianma New Materials leading the gains [1] - The Shanghai Composite Index closed at 3820.09, down 0.3%, while the Shenzhen Component Index closed at 13070.86, down 0.04% [1] Stock Performance - Tianma New Materials (code: 838971) closed at 42.00, up 10.53% with a trading volume of 146,300 shares and a transaction value of 605 million yuan [1] - Other notable performers included: - Strength Diamond (code: 301071) at 32.63, up 3.42% [1] - Quartz Shares (code: 603688) at 39.52, up 1.88% [1] - Suotong Development (code: 603612) at 26.81, up 1.78% [1] - Qilu Huaxin (code: 830832) at 8.95, up 1.02% [1] Capital Flow - The non-metal materials sector saw a net inflow of 218 million yuan from institutional investors, while retail investors experienced a net outflow of 150 million yuan [2] - The capital flow for key stocks included: - Quartz Shares with a net inflow of 112 million yuan from institutional investors [3] - Suotong Development with a net inflow of 62.73 million yuan from institutional investors [3] - Strength Diamond with a net inflow of 31.12 million yuan from institutional investors [3]

Group 1 - The overnight surge in U.S. storage companies, with Micron Technology and SanDisk rising over 5%, and Western Digital increasing by over 4%, reaching historical highs [1] - SK Hynix executives expressed optimism about AI orders, predicting sustained high growth until 2030, which is expected to benefit the storage industry chain due to increasing AI computing power demand [1] - The global DRAM market is anticipated to expand continuously, supported by strong HBM shipment momentum and the ongoing supply gap in niche DRAM as major manufacturers cease DDR4 production [1] Group 2 - Customized storage is becoming the preferred solution for edge AI, with Nanya Technology aiming to complete validation by the end of 2025 and start mass production in 2026, targeting applications in AI servers, AIPC, AI smartphones, AI robots, and AI vehicles [2] - Zhaoyi Innovation's subsidiary, Qingyun Technology, is focusing on providing customized solutions based on customer needs in terms of capacity, bandwidth, and energy consumption, reshaping edge storage [2] Group 3 - Companies involved in HBM include Yishitong and Lianrui New Materials, while storage chip companies include Hengshuo Co., Baiwei Storage, Jiangbolong, and Demingli [3]

Investment Rating - The industry investment rating is maintained as "Add" [6] Core Viewpoints - The report highlights a strong demand for DDR4 modules, particularly driven by AI and networking-related IPC customer needs, which is expected to boost overall revenue performance [2][26] - SK Hynix has successfully completed the development and mass production of HBM4, which features double the data transmission channels compared to the previous generation, significantly enhancing bandwidth and energy efficiency [2][27] - The supply of server DDR4 remains tight, leading to an increase in DDR4 RDIMM prices this month, with expectations of continued price increases in Q4 2025 due to supply constraints in DDR5 [3][28] Summary by Sections NAND - SK Hynix has begun supplying its mobile NAND flash solution ZUFS 4.1, which utilizes zoned storage technology to enhance data management efficiency and operating system speed [1][26] - The average price fluctuation for 22 types of NAND particles ranged from -7.56% to 7.91%, with an average change of -0.06% [1] DRAM - The average price fluctuation for 18 types of DRAM ranged from -0.37% to 4.51%, with an average increase of 1.68% [2] - The demand for DDR4 modules is particularly strong, with positive outlooks for the second half of 2025 [2][26] HBM - SK Hynix's HBM4 product is expected to improve AI service performance by up to 69% and features a data processing speed exceeding 10 Gbps [2][27] Market Dynamics - The report indicates that the server DDR4 market is experiencing a supply shortage, which is driving prices up [3][28] - The DDR5 market is currently stable, but supply tightness is anticipated to lead to price increases in the future [3][28] Investment Recommendations - The report recommends focusing on companies benefiting from the rapid development of advanced computing chips in the HBM industry, such as Saiteng Co., Yishitong, and Lianrui New Materials [4] - For the storage chip sector, companies like Dongxin Co. and Zhaoyi Innovation are highlighted as potential investment opportunities due to recovering inventory levels and rising demand driven by AI [4]

证券之星消息，9月18日非金属材料板块较上一交易日下跌0.07%，长江材料领跌。当日上证指数报收于 3831.66，下跌1.15%。深证成指报收于13075.66，下跌1.06%。非金属材料板块个股涨跌见下表： | 代码 | 名称 | 收盘价 | 涨跌幅 | 成交量(手) | 成交额(元) | | | --- | --- | --- | --- | --- | --- | --- | | 688300 | 联瑞新材 | 56.60 | 3.95% | 11.38万 | | 6.44亿 | | 832175 | 东方碳素 | 13.06 | 1.40% | 5.39万 | 7090.59万 | | | 603688 | 石英股份 | 38.79 | 1.23% | 27.15万 | | 10.60亿 | | 830832 | 齐鲁华信 | 8.86 | 0.23% | 6.58万 | 5879.74万 | | | 838971 | 天马新材 | 38.00 | 0.11% | 4.11万 | | 1.58亿 | | 836675 | 秉扬科技 | 12.41 | -1.27% | 2.07万 | 2609.44 ...

Group 1 - The semiconductor competition is intensifying, with the U.S. adding 32 entities to its control list, including 23 Chinese companies, which may benefit China's domestic semiconductor and AI chip industries through policy protection, technological breakthroughs, and domestic substitution [5][6] - The automotive industry is expected to achieve sales of approximately 32.3 million vehicles in 2025, a year-on-year increase of about 3%, with new energy vehicle sales projected at around 15.5 million, reflecting a growth of about 20% [6][7] - The basic chemical industry is seeing a positive trend, with the Shanghai and Shenzhen 300 Index rising by 1.38% and the basic chemical index increasing by 2.36%, outperforming the market [7][8] Group 2 - The α-olefin industry is highly concentrated, with North America accounting for 62% of global production capacity, and the top five producers holding 86% of the capacity [12][13] - China's POE market has significant potential, with a projected apparent consumption of 440,000 tons in 2024, almost entirely reliant on imports, indicating a strong trend towards domestic substitution as new LAO facilities come online [13][14] - The cost of ethylene is crucial for controlling α-olefin and POE production costs, with domestic production benefiting from lower costs compared to North American counterparts [14][15] Group 3 - The Ministry of Commerce plans to introduce a series of policies aimed at high-quality development in the accommodation industry and the integration of railways and tourism [17] - The fiscal revenue for the first eight months of 2025 was 14.82 trillion yuan, a year-on-year increase of 0.3%, while fiscal expenditure rose by 3.1% to 17.93 trillion yuan [18] - The Federal Reserve has lowered interest rates by 25 basis points to a range of 4.00%-4.25%, marking the first rate cut in nine months [18][20] Group 4 - The A-share market showed mixed performance, with the Shanghai Composite Index closing at 3,876 points, up 0.37%, while the Shenzhen Component and ChiNext indices also saw gains [20][21] - The multi-financial sector led the market with a 2.87% increase, while sectors like precious metals and tourism experienced declines [22][24] - The market data indicates a financing balance of 2.3758 trillion yuan, with the 10-year Treasury yield at 1.8349% [26]

Core Viewpoint - Lianrui New Materials has shown a positive stock performance with a year-to-date increase of 13.11% and a recent market capitalization of 13.426 billion yuan, indicating strong investor interest and potential growth in the inorganic filler and particle carrier industry [1][2]. Company Overview - Lianrui New Materials, established on April 28, 2002, and listed on November 15, 2019, is located in Lianyungang, Jiangsu Province. The company specializes in the research, manufacturing, and sales of inorganic fillers and particle carrier products [1]. - The company's main revenue sources include spherical inorganic powder (57.16%), angular inorganic powder (26.39%), and other products (16.32%) [1]. Financial Performance - For the first half of 2025, Lianrui New Materials reported a revenue of 519 million yuan, reflecting a year-on-year growth of 17.12%. The net profit attributable to shareholders was 139 million yuan, marking an 18.01% increase compared to the previous year [2]. - Since its A-share listing, the company has distributed a total of 381 million yuan in dividends, with 242 million yuan distributed over the last three years [3]. Shareholder Information - As of June 30, 2025, the number of shareholders decreased by 3.27% to 7,692, while the average number of circulating shares per person increased by 34.39% to 31,392 shares [2]. - Notable institutional shareholders include Noan Pioneer Mixed A and Xinao Craftsman Selected Mixed, with increases in their holdings [3].

Market Overview - On September 17, the non-metal materials sector experienced a slight decline of 0.1%, with Suotong Development leading the drop [1] - The Shanghai Composite Index closed at 3876.34, up 0.37%, while the Shenzhen Component Index closed at 13215.46, up 1.16% [1] Stock Performance - Notable gainers in the non-metal materials sector included: - Changjiang Materials: closed at 24.29, up 2.58% with a trading volume of 83,400 shares and a turnover of 201 million yuan [1] - Dongfang Xiayuan: closed at 12.88, up 1.18% with a trading volume of 27,800 shares and a turnover of 35.7 million yuan [1] - Ningxin New Materials: closed at 17.49, up 1.10% with a trading volume of 63,600 shares and a turnover of 111 million yuan [1] - Conversely, Suotong Development saw a significant decline, closing at 26.90, down 2.39% with a trading volume of 245,300 shares and a turnover of 662 million yuan [2] Capital Flow - The non-metal materials sector experienced a net outflow of 45.6455 million yuan from institutional investors, while retail investors saw a net inflow of 8.4459 million yuan [2] - The capital flow for specific stocks showed: - Changjiang Materials had a net inflow of 15.8210 million yuan from institutional investors [3] - Suotong Development faced a substantial net outflow of 61.0257 million yuan from institutional investors [3]

Group 1 - The semiconductor competition is intensifying, with the U.S. Department of Commerce adding 32 entities to its control list, including 23 Chinese companies, which may benefit China's domestic semiconductor and AI chip industries through policy protection, technological breakthroughs, and domestic substitution [5][6] - Eight departments in China issued a plan to stabilize the automotive industry, aiming for approximately 32.3 million vehicle sales in 2025, a 3% year-on-year increase, with new energy vehicle sales projected at 15.5 million, a 20% increase [6][7] - The basic chemical industry is expected to benefit from the automotive industry's growth, which is a significant consumer of chemical products, thus supporting the overall development of the automotive materials supply chain [6][7] Group 2 - The α-olefin industry is highly concentrated, with North America accounting for 62% of global production capacity, and the top five producers holding 86% of the capacity [12][13] - China's POE market has significant potential, with a projected apparent consumption of 440,000 tons in 2024, almost entirely reliant on imports, indicating a strong trend towards domestic substitution as new LAO facilities come online [13][14] - The cost of ethylene is crucial for controlling α-olefin and POE production costs, with domestic production benefiting from lower costs compared to North American counterparts [14][15] Group 3 - The report highlights the structural optimization of supply, suggesting a focus on sectors with significant elasticity and advantages, such as organic silicon, membrane materials, and dye sectors [8][10] - The domestic chemical new materials sector has a self-sufficiency rate of about 56%, indicating a growing opportunity for domestic substitution in high-end materials like photoresists and engineering plastics [10][12] - Investment recommendations include companies with strong barriers in ethylene production, such as Satellite Chemical and Wanhua Chemical, and those with regional advantages like China National Petroleum and China Petroleum & Chemical [15]