证券代码：300346 证券简称：南大光电 公告编号：2025-039 本公司及董事会全体成员保证信息披露的内容真实、准确、完整， 没有虚假记载、误导性陈述或重大遗漏。 一、担保额度预计的情况概述 江苏南大光电材料股份有限公司（以下简称"公司"）于 2025 年 4 月 1 日召开 第九届董事会第十一次会议，2025 年 4 月 24 日召开 2024 年度股东大会，审议通过 了《关于向金融机构申请综合授信额度及对控股子公司担保额度预计的议案》，同意 公司及全资、控股子公司向银行等金融机构申请综合授信，总额不超过人民币 15 亿 元，公司及子公司为合并报表范围内的子公司提供总计不超过人民币 7 亿元的担保 额度。董事会提请股东大会授权公司管理层根据实际经营需要在子公司之间相互调 剂使用本次担保预计额度。 具体内容详见公司刊登在中国证监会指定创业板信息披露网站的《关于向金融 机构申请综合授信额度及对控股子公司担保额度预计的公告》（公告编号：2025-023）。 二、担保进展情况 2024 年 5 月 20 日，公司及子公司南大光电（乌兰察布）有限公司、南大光电 （淄博）有限公司、南大光电半导体材料有限公司、全椒 ...

Core Points - The Shanghai Composite Index is currently at 3503.55 points, below the five-day moving average, with a decline of 0.46% [1] - The total trading volume of A-shares today is 802.366 billion yuan, with 198 A-shares breaking through the five-day moving average [1] Summary by Category Stock Performance - Notable stocks with significant deviation rates above the five-day moving average include: - Xinyi Technology (新易盛) with a deviation rate of 14.20% and a daily increase of 20.00% [1] - Mingyang Circuit (明阳电路) with a deviation rate of 10.59% and a daily increase of 14.54% [1] - Shenghong Technology (胜宏科技) with a deviation rate of 8.05% and a daily increase of 12.14% [1] - Other stocks with smaller deviation rates that have just crossed the five-day moving average include: - Jianghuai Automobile (江淮汽车) and Nanda Optoelectronics (南大光电) [1] Trading Data - The trading data for stocks that broke through the five-day moving average includes: - Xinyi Technology (新易盛): Latest price 157.08 yuan, five-day moving average 137.55 yuan [1] - Mingyang Circuit (明阳电路): Latest price 17.25 yuan, five-day moving average 15.60 yuan [1] - Shenghong Technology (胜宏科技): Latest price 161.88 yuan, five-day moving average 149.82 yuan [1]

Core Viewpoint - The article emphasizes the critical role of photoresist in semiconductor manufacturing, highlighting the challenges faced by domestic companies in this field and exploring potential investment opportunities amidst these challenges [4]. Group 1: Challenges in Photoresist Development - High technical barriers exist due to the complex chemical formulations required for different types of photoresists, necessitating extensive R&D and experimentation [7][9]. - Strict purity requirements for photoresists are crucial, as even minor impurities can lead to defects in chips, demanding a high level of quality control [11]. - Advanced production equipment is essential for photoresist manufacturing, which is often monopolized by foreign companies, posing a significant hurdle for domestic firms [12]. Group 2: Market Landscape - The global photoresist market is projected to reach $4.74 billion (approximately 34.33 billion RMB) in 2024, with a year-on-year growth of 1.6%, driven by the rapid development of the semiconductor industry [30]. - China's photoresist market is expected to exceed 20 billion RMB by 2029, with a compound annual growth rate of about 10% from 2024 to 2029, although high-end products remain largely imported [31]. Group 3: Domestic Opportunities and Challenges - Domestic companies are making strides in the mid-to-low-end photoresist market, with some achieving production in the KrF segment and progressing towards high-end products like EUV photoresists [33][34]. - Government policies are increasingly supportive of the semiconductor industry, providing funding and guidance for photoresist R&D, which is crucial for domestic companies to overcome technological barriers [36][37]. Group 4: Investment Considerations - Investment in the photoresist sector is seen as promising due to the growing market demand driven by advancements in technologies such as 5G and AI [44]. - The potential for domestic companies to replace imported products presents a significant investment opportunity, especially as they enhance their technological capabilities [45]. - Investors are advised to focus on companies with strong technical capabilities, market competitiveness, and excellent management teams to maximize returns [51][52][53].

证券代码：300346 证券简称：南大光电 公告编号：2025-038 江苏南大光电材料股份有限公司 关于持股5%以上股东、董事减持股份的预披露公告 持股 5%以上的股东、董事张兴国先生，董事、高级管理人员王陆平先生保证向 本公司提供的信息内容真实、准确、完整，没有虚假记载、误导性陈述或重大遗漏。 本公司及董事会全体成员保证公告内容与信息披露义务人提供的信息一致。 特别提示： 持有江苏南大光电材料股份有限公司（以下简称"公司"） 43,087,824股（占公司当 前总股本6.23%）的股东、董事张兴国先生计划自本次减持公告披露之日起15个交易日 后的3个月内，以集中竞价或大宗交易方式减持公司股份不超过6,911,569股（占公司当 前总股本的1.00%）。 持有公司780,000股（占公司当前总股本0.11%）的董事、总裁兼技术总监王陆平先 生计划自本次减持公告披露之日起15个交易日后的3个月内，以集中竞价或大宗交易方 式减持公司股份不超过195,000股（占公司当前总股本的0.03%）。 公司近日收到持股5%以上股东、董事张兴国先生和董事、总裁兼技术总监王陆平 先生的《股份减持计划告知函》，现将有关情况公告 ...

Core Viewpoint - The semiconductor materials ETF (562590) is showing positive performance, with a notable increase in key component stocks, indicating a potential growth cycle in the semiconductor industry driven by AI demand and domestic substitution trends [3][4]. Group 1: Market Performance - As of June 20, 2025, the semiconductor materials theme index rose by 0.77%, with significant gains in component stocks such as Sanjia Technology (+4.80%), Jingrui Electric Materials (+4.10%), and Huahai Chengke (+2.09%) [3]. - The semiconductor materials ETF (562590) increased by 0.67%, marking its third consecutive rise, with the latest price at 1.06 yuan [3]. - The tracking error for the semiconductor materials ETF over the past three months is 0.014%, indicating high tracking accuracy compared to comparable funds [3]. Group 2: Industry Events - The 2025 World Semiconductor Expo is scheduled to take place from June 20 to 22, 2025, at the Nanjing International Expo Center, focusing on cutting-edge technologies and products in IC design, wafer manufacturing, packaging testing, and semiconductor applications [3]. - Key topics at the expo will include EDA, advanced processes, computing power chips, semiconductor materials, and supply chain security [3]. Group 3: Industry Insights - Minsheng Securities highlights that the demand for computing power driven by artificial intelligence, combined with the acceleration of domestic substitution due to U.S. tariff policies, is propelling the rapid development of several leading semiconductor companies [3]. - The Chinese semiconductor industry is expected to enter a new growth cycle, with promising investment prospects [3]. Group 4: ETF Composition - The semiconductor materials ETF closely tracks the China Securities Semiconductor Materials and Equipment Theme Index, which includes 40 listed companies deeply involved in the semiconductor materials and equipment sectors [4]. - The index features leading companies that have made significant breakthroughs in domestic substitution, such as North Huachuang and Zhongwei Company in etching equipment, and Hushi Silicon Industry and Nanda Optoelectronics in key materials [4].

Core Viewpoint - The article highlights the significant growth and advancements in the semiconductor photoresist industry, showcasing various companies' performance and R&D capabilities in this sector. Group 1: Business Performance - Tongcheng New Materials achieved a 50.43% year-on-year increase in semiconductor photoresist revenue for 2024, with ArF photoresist passing customer validation and generating revenue [1] - Aisen Semiconductor reported a 37.68% year-on-year growth in photoresist and supporting reagent revenue for 2024, with significant market penetration in advanced packaging negative photoresist [2] - Shanghai Xinyang's photoresist products saw an overall revenue increase of over 100% year-on-year, with multiple KrF photoresists achieving bulk sales [4] - Nanda Optoelectronics experienced a breakthrough of over 80% year-on-year growth in photoresist business, with several ArF products validated by customers [6] - Jingrui Electric Materials reported a nearly 30% year-on-year growth in photoresist business for 2024, maintaining a strong market position with its UV wide-spectrum photoresists [5] Group 2: R&D Capabilities - Tongcheng New Materials has nearly 50 semiconductor photoresist R&D projects, with half validated by users and some entering small-scale production [2] - Aisen Semiconductor is advancing its PSPI photoresist product certifications and has formed an expert team for KrF photoresist development [3] - Shanghai Xinyang is enhancing its R&D and industrialization of high-end photoresists for integrated circuit manufacturing, focusing on 3D NAND, DRAM, and logic advanced processes [5] - Nanda Optoelectronics is developing high-resolution photoresists for 300mm wafers below 90nm and aims to establish a proprietary patent system [6] - Jingrui Electric Materials is collaborating with Sinopec Group on ArF high-end photoresists and has multiple R&D projects underway for various photoresist applications [7] Group 3: Industry Events - The 2025 TrendBank (Fifth) Lithography Industry Conference will be held on July 9-10 in Hefei, aiming to gather experts, scholars, and industry representatives to discuss advancements and challenges in lithography technology and materials [9]

Investment Rating - The report provides a standard investment rating for the basic chemical industry, indicating a cautious outlook due to recent market fluctuations and supply chain disruptions [1]. Core Insights - Japan's Mitsui Chemicals is exiting the NF3 business, which may enhance China's competitiveness in electronic specialty gases, with potential market share expansion [4][10]. - The chlorantraniliprole incident has caused supply disruptions, potentially boosting the market for pesticides and intermediates, with a shift towards high-efficiency, low-toxicity products [4][12]. - The report suggests focusing on key sub-sectors such as integrated refining and petrochemical chains, refrigerant industry leaders, and domestic alternative materials [4][14]. Summary by Sections 1. Industry News and Event Commentary - Mitsui Chemicals' exit from the NF3 business is attributed to rising competition and costs, indicating that Chinese manufacturers may fill the gap and increase exports [10][11]. - The chlorantraniliprole incident is expected to accelerate market consolidation, benefiting companies with technological advantages and regulatory compliance [12][13]. 2. Chemical Sector Weekly Performance - For the week of May 26 to May 30, the Shanghai Composite Index fell by 1.08%, while the Shenwan Petroleum and Petrochemical Index rose by 0.40%, outperforming the market by 1.48 percentage points [15][18]. - The basic chemical index decreased by 0.66%, ranking 23rd among all Shenwan primary industries [15][18]. 3. Key Product Price and Spread Performance - Notable price increases included potassium chloride (up 5.66%) and paraxylene (up 4.94%), while hydrochloric acid saw a significant drop of 28.00% [27][28]. - The price spread for carbon black increased by 31.13%, indicating a tightening supply situation [29][30].

Investment Rating - The report provides a standard investment rating for the basic chemical industry, indicating a cautious outlook due to recent market fluctuations and supply chain disruptions [4]. Core Insights - The exit of Japan's Mitsui Chemicals from the nitrogen trifluoride (NF3) business is expected to enhance China's competitiveness in electronic specialty gases, with potential for increased market share [10][11]. - Supply disruptions from incidents like the chlorantraniliprole event are likely to boost the market outlook for pesticides and intermediates, leading to a potential price recovery in the short term [12][13]. - The report emphasizes the importance of monitoring key sub-sectors and suggests investment opportunities in integrated supply chains and leading companies within the chemical industry [14]. Summary by Sections 1. Industry News and Event Commentary - Mitsui Chemicals announced its exit from the NF3 business, with production ceasing by March 2026, indicating a shift in market dynamics favoring Chinese producers [10]. - A chemical company experienced an explosion, impacting the chlorantraniliprole supply chain, which may lead to a consolidation of market players and a potential price increase for certain pesticide products [12][13]. 2. Chemical Sector Weekly Performance - For the week of May 26 to May 30, the Shanghai Composite Index fell by 1.08%, while the Shenwan Petroleum and Petrochemical Index rose by 0.40%, outperforming the market [15]. - The basic chemical index decreased by 0.66%, ranking 23rd among all Shenwan primary industries [15]. 3. Key Product Price Movements - Notable price increases included potassium chloride (up 5.66%) and paraxylene (up 4.94%), while hydrochloric acid saw a significant drop of 28.00% [27][28]. - The report highlights the price fluctuations of key products, indicating a volatile market environment that could present both risks and opportunities for investors [27][28]. 4. Investment Recommendations - The report suggests focusing on integrated players in the refining-PX-PTA chain, leading fluorochemical companies, and firms in the domestic substitution of new materials [14]. - Specific companies highlighted for potential investment include Hengli Petrochemical, Rongsheng Petrochemical, and various leaders in the semiconductor materials sector [14].

证券代码：300346 证券简称：南大光电 公告编号：2025-037 江苏南大光电材料股份有限公司 关于控股子公司完成工商变更登记的公告 本公司及董事会全体成员保证信息披露的内容真实、准确、完整， 没有虚假记载、误导性陈述或重大遗漏。 江苏南大光电材料股份有限公司近日接到控股子公司南大光电（乌兰察布）有 限公司（以下简称"公司"）的报告，其将公司法定代表人进行了变更，且已完成了 工商变更登记手续，取得了由乌兰察布市集宁区行政审批政务服务与数据管理局换 发的《营业执照》。 变更后的《营业执照》主要信息如下： 统一社会信用代码：91150902MA13U4JK03 名称：南大光电（乌兰察布）有限公司 类型：其他有限责任公司 法定代表人：LUPING WANG（王陆平） 注册资本：叁亿元（人民币元） 成立日期：2021年02月09日 经营范围：许可项目：危险化学品生产；危险化学品经营；检验检测服务。（依 法须经批准的项目，经相关部门批准后方可开展经营活动，具体经营项目以相关部 门批准文件或许可证件为准） 一般项目：货物进出口；化工产品销售（不含许可类化工产品）。（除依法须经批 准的项目外，凭营业执照依法自主开展经 ...

Group 1 - The semiconductor materials ETF (562590) has seen a decline of 1.20%, with a latest price of 1.07 yuan, while it has increased by 30.22% over the past year [3][4] - The liquidity of the semiconductor materials ETF shows a turnover rate of 0.95% with a transaction volume of 302.02 million yuan, and an average daily transaction volume of 16.30 million yuan over the past year, ranking it among the top two comparable funds [3] - The ETF's scale has grown significantly, with an increase of 609.55 million yuan over the past week, placing it second among comparable funds [3] Group 2 - The semiconductor materials ETF has reached a new high of 296 million shares, marking a peak in the last month [3] - The ETF has experienced continuous net inflows over the past four days, with a maximum single-day net inflow of 542.63 million yuan, totaling 1.30 billion yuan, and an average daily net inflow of 325.99 million yuan [3] - As of May 14, 2025, the tracking error of the semiconductor materials ETF over the past two months is 0.013%, the highest among comparable funds [4] Group 3 - The semiconductor sector is expected to see a recovery in overall performance in 2024, with the first quarter of this year showing a continued recovery trend [4] - The integrated circuit manufacturing and analog sub-sectors have returned to profitability, while other sub-sectors have achieved double-digit year-on-year growth in net profit, driven by terminal recovery, AI computing power construction, and demand in materials and advanced packaging [4] - The index tracks 40 listed companies involved in semiconductor materials and equipment, reflecting the overall performance of these securities [4] Group 4 - The top ten weighted stocks in the semiconductor materials equipment index account for 62% of the index, with notable companies including Northern Huachuang (002371) and Zhongwei Company (688012) [4][6] - The weightings of the top stocks include Northern Huachuang at 16.44%, Zhongwei Company at 13.55%, and Hu Silicon Industry at 5.61% [6]