- The report introduces a "Total Heat Index" indicator, which aggregates the browsing, self-selection, and click counts of individual stocks, normalized by their market share on the same day, and then multiplied by 10,000, with a value range of [0,10000][7] - The "Total Heat Index" is used as a proxy variable for "emotional heat" to track the overall market sentiment for broad-based indices, industries, and concepts[7] - The report constructs a simple rotation strategy based on the weekly heat change rate (MA2) of broad-based indices, buying the index with the highest heat change rate at the end of each week, and staying out of the market if the highest change rate belongs to the "others" group[13][15] - The rotation strategy based on the heat change rate (MA2) has an annualized return of 8.74% since 2017, with a maximum drawdown of 23.5%, and a return of 31.42% in 2025[16] - The report also constructs two simple portfolios: one selecting the top 10 stocks with the highest total heat from the top 5 concepts with the largest heat change rate, and another selecting the bottom 10 stocks with the lowest total heat from the same concepts[32][33] - The "BOTTOM" portfolio, which selects low-heat stocks from high-heat concepts, has historically achieved an annualized return of 15.71% with a maximum drawdown of 28.89%, and a return of 41% in 2025[34] - The "Total Heat Index" indicator is defined as the sum of browsing, self-selection, and click counts of individual stocks, normalized by their market share on the same day, and then multiplied by 10,000, with a value range of [0,10000][7] - The report calculates the weekly heat change rate (MA2) for different groups of stocks, including broad-based indices, industries, and concepts, and uses this to construct a rotation strategy[13][15] - The rotation strategy involves buying the index with the highest heat change rate at the end of each week, and staying out of the market if the highest change rate belongs to the "others" group[13][15] - The report constructs two simple portfolios: one selecting the top 10 stocks with the highest total heat from the top 5 concepts with the largest heat change rate, and another selecting the bottom 10 stocks with the lowest total heat from the same concepts[32][33] - The rotation strategy based on the heat change rate (MA2) has an annualized return of 8.74% since 2017, with a maximum drawdown of 23.5%, and a return of 31.42% in 2025[16] - The "BOTTOM" portfolio, which selects low-heat stocks from high-heat concepts, has historically achieved an annualized return of 15.71% with a maximum drawdown of 28.89%, and a return of 41% in 2025[34]

率会延续结构性复苏趋势，后期需要密切关注存储价格变化、AI持续性投资、需求复苏的持续性力 度。 2025年AI呈现从云服务器到端侧的全面共振，AI在短期或存在投资过热等分歧，但长期高速增长趋势 不容置疑，可以长期持续关注AI服务器、AI端侧应用等产业链机遇。全球随着ChatGPT的问世，AI进入 到一个全新的发展阶段。AI产业快速增长，带动了诸多例如算力芯片、光模块、PCB、高端存储等多个 上游产业快速发展，我国部分企业充分享受AI时代高速发展与国产替代加速发展的红利。短期内全球 存在AI投资过热的分歧，但长期增长趋势不改。AI云端的高速发展，同时也带动了端侧的创新，AI赋 能新产品，带动了零组件的升级，AIOT进入到一个可以持续创新迭代的阶段。我们认为长期来看，AI 不仅给我们的生产、生活带来降本增效的功能，而且还给我们的生活 带来新的感受、体验、便捷，开创了诸多新的需求。建议关注AI服务器与AI端侧的长期发展机遇。 面对海外市场管制的压力，我国半导体产业加速发展的决心不可动摇，国产化进程的加速更离不开上游 设备、零组件、材料的升级换代，我国上游产业链或迎来加速发展机遇。我国目前是全球晶圆厂产能最 大的经济 ...

Core Viewpoint - Company plans to issue up to 70.43 million shares to raise no more than 900 million yuan for the development of AI-based high-frequency copper-clad laminates and to supplement working capital [1] Group 1: Company Strategy - The funds raised will be primarily allocated to the "AI-based high-frequency copper-clad laminate R&D and industrialization project," with an investment of 740 million yuan planned for this initiative [2] - The project aims to establish a production capacity of 7.2 million high-frequency copper-clad laminates and 16 million meters of bonding sheets annually, with a construction period of 24 months [2][5] - Company focuses on the design, R&D, production, and sales of copper-clad laminates and bonding sheets, having developed core technologies that align with downstream industry needs over 20 years [3] Group 2: Market Dynamics - The demand for high-performance copper-clad laminates is increasing due to the upgrade of AI servers, 5G communications, and optical modules, which require higher signal transmission rates and lower transmission losses [2] - The AI copper-clad laminate market is projected to reach approximately 2.2 billion USD by 2025, reflecting a 100% year-on-year growth [2] - The electronic information industry is undergoing an upgrade wave, with copper-clad laminates accounting for 30%-40% of PCB production costs, driving demand for high-end products [4] Group 3: Financial Performance - Company reported a revenue of 3.66 billion yuan for the first three quarters, a year-on-year increase of 49.9%, and a net profit of 158 million yuan, up 180.8% year-on-year [4] - The expansion project is expected to enhance market share and improve profitability in the high-end materials sector [5]

Summary of Conference Call Records Industry Overview - The conference call discusses the **AIPCB (Artificial Intelligence Printed Circuit Board)** industry and the **storage industry** in China, highlighting the competitive landscape and investment opportunities within these sectors [1][2]. Key Points on AIPCB Industry - The development of **AI chips** is driving a comprehensive upgrade in **PCB materials**, with a shift from traditional fiberglass to third-generation fabrics (Q fabric), although current production capacity is tight [1][2]. - **Hydrocarbon resins** are seeing increased usage due to their excellent dielectric properties and low loss during the upgrades from Ma7 to Ma9, with companies like **Dongcai Technology** receiving certifications from core copper-clad board manufacturers [1][3]. - The transition to **HVLP2** copper foil solutions is aimed at reducing skin effect losses, with expectations to introduce **HVLP4** next year [1][3]. - The increase in material hardness is leading to higher consumption of consumables like drill bits, with **Dazhu CNC** adopting ultra-fast laser equipment for high-end PCB manufacturing [1][3][5]. - The industry is moving towards advanced manufacturing processes, with a focus on cold processing methods to enhance precision without generating excess heat [5]. Investment Opportunities in Storage Industry - The storage industry is experiencing non-linear growth in demand driven by AI applications, particularly during training and inference phases [2][8]. - The listing of domestic storage companies is expected to boost procurement of equipment and components, enhancing China's competitiveness in the global storage market [2]. - Recommended companies include **Jinghe Integration**, **Huicheng**, **Tuojing Technology**, **Micro-Guide Nano**, and **Huahai Qingke**, which are expected to benefit from storage technology upgrades [2][8]. - Companies like **Zhaoyi Innovation** and **Junzheng** are also highlighted as beneficiaries of rising storage prices [2]. Trends in PCB Industry - The PCB industry is undergoing significant upgrades in materials and manufacturing processes, with **Dazhu Laser** having a first-mover advantage in high-end equipment like **LDI (Laser Direct Imaging)** [6]. - The demand for high-end materials and equipment is increasing as drilling becomes finer and denser, driven by technological advancements [6]. - The domestic upgrade efforts are synchronizing with semiconductor packaging upgrades, creating substantial market opportunities [6]. - Despite short-term market fluctuations, the long-term fundamentals of the PCB industry remain clear and upward-trending, driven by material and processing upgrades [6][7]. Notable Companies in Semiconductor Sector - In the semiconductor sector, focus is on storage-related companies such as **Jinghe Technology**, **Huicheng**, **Huarong Microelectronics**, and **Tuo Jing Technology**, which are expected to benefit from storage upgrades [8]. - For the AI PC segment, **Shengyi Technology** is highlighted as a top choice in the CCL (Copper Clad Laminate) segment, with other companies like **Shenzhen Circuit**, **Hudian Co.**, and **Dongshan Precision** also noted for their potential [8]. - The ongoing technological iterations in the upstream supply chain, including companies like **Feili Hua**, **Zhongcai International**, and **Dongcai Technology**, are also key focus areas [8]. Conclusion - The AIPCB and storage industries present significant investment opportunities driven by technological advancements and market demand. The focus on material upgrades and manufacturing process enhancements is expected to propel growth in these sectors, making them attractive for investors looking to capitalize on emerging trends.

证券日报网讯12月22日晚间，深南电路（002916）发布公告称，因原保荐代表人赵宗辉先生工作变动， 国泰海通证券现委派许磊先生接替其继续履行2021年度非公开发行A股股票项目持续督导工作，更换后 持续督导保荐代表人为银波先生、许磊先生。 ...

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。 证券代码：002916 证券简称：深南电路 公告编号：2025-039 深南电路股份有限公司 关于变更持续督导保荐代表人的公告 深南电路股份有限公司（以下简称"公司"）2021 年度非公开发行 A 股股票 项目的联合保荐机构为国泰海通证券股份有限公司（下称"国泰海通"，曾用名"国 泰君安证券股份有限公司"）、中航证券有限公司（下称"中航证券"）。其中，国 泰海通指定银波先生、赵宗辉先生担任公司 2021 年度非公开发行 A 股股票项目的 保荐代表人，负责保荐工作及持续督导工作，持续督导期已于 2023 年 12 月 31 日 届满。前述期限届满后因公司尚存在募集资金使用的情形，国泰海通和中航证券 继续就相关事项履行持续督导义务。截至目前，公司募集资金已使用完毕。 公司于今日收到国泰海通出具的《关于更换深南电路股份有限公司持续督导 保荐代表人的函》，原保荐代表人赵宗辉先生因工作变动，无法继续从事公司的持 续督导工作。鉴于部分持续督导义务尚未履行完毕，为保证后续工作的有序进行， 国泰海通现委派保荐代表人许磊先生接替赵 ...

Market Performance - The component sector increased by 4.81% compared to the previous trading day, with Nanya Technology leading the gains [1] - The Shanghai Composite Index closed at 3917.36, up 0.69%, while the Shenzhen Component Index closed at 13332.73, up 1.47% [1] Top Gainers in the Component Sector - Nanya Technology (Code: 6158889) closed at 65.65, up 9.84% with a trading volume of 78,800 shares and a transaction value of 502 million [1] - Jingwang Electronics (Code: 603228) closed at 72.87, up 8.86% with a trading volume of 476,000 shares and a transaction value of 3.396 billion [1] - Mingyang Circuit (Code: 300739) closed at 18.11, up 8.70% with a trading volume of 420,100 shares and a transaction value of 751 million [1] - Shengyi Technology (Code: 600183) closed at 65.57, up 8.51% with a trading volume of 510,200 shares and a transaction value of 3.269 billion [1] - Dongshan Precision (Code: 002384) closed at 81.82, up 8.20% with a trading volume of 606,100 shares and a transaction value of 4.878 billion [1] Market Capital Flow - The component sector saw a net inflow of 2.45 billion from major funds, while retail investors experienced a net outflow of 1.027 billion [2] - Major funds showed a significant interest in stocks like Huadian Technology (Code: 002463) and Shengyi Technology (Code: 600183), with net inflows of 464.1 million and 425 million respectively [3] - Retail investors showed a net outflow in several stocks, indicating a cautious sentiment among smaller investors [3]

Group 1 - The National Big Fund holding concept rose by 3.28%, ranking 6th among concept sectors, with 43 stocks increasing in value [1][2] - Notable gainers include Beidou Xingtong, which hit the daily limit, and other companies like Aisen Co., Tuojing Technology, and Jingce Electronics, with increases of 18.65%, 10.37%, and 9.22% respectively [1][2] - The biggest decliners in the sector were Saiwei Electronics, Baiwei Storage, and Sitwei, with declines of 4.64%, 1.54%, and 0.36% respectively [1] Group 2 - The National Big Fund holding concept saw a net inflow of 1.823 billion yuan, with 35 stocks receiving net inflows, and 9 stocks exceeding 100 million yuan in net inflows [2] - The top stock for net inflow was SMIC, with a net inflow of 837 million yuan, followed by ShenNan Circuit, Beidou Xingtong, and Changchuan Technology, with net inflows of 439 million yuan, 375 million yuan, and 211 million yuan respectively [2] Group 3 - In terms of net inflow ratios, Beidou Xingtong, ShenNan Circuit, and Zhongjuxin had the highest ratios at 34.52%, 12.82%, and 10.82% respectively [3] - The top stocks in the National Big Fund holding concept by net inflow include SMIC with a 6.00% increase and a turnover rate of 4.05%, and ShenNan Circuit with a 6.23% increase and a turnover rate of 2.31% [3][4]

| 代码 | 简称 | 今日涨跌幅 | 今日换手率 | 主力资金流量（万 | 主力资金净流入比率 | | --- | --- | --- | --- | --- | --- | | | | （%） | （%） | 元） | （%） | | 688981 | 中芯国 际 | 6.00 | 4.05 | 83671.32 | 8.70 | | 002916 | 深南电 路 | 6.23 | 2.31 | 43905.56 | 12.82 | | 600183 | 生益科 技 | 8.51 | 2.13 | 41768.56 | 12.78 | | 605358 | 立昂微 | 10.01 | 7.16 | 34498.40 | 20.01 | | 300475 | 香农芯 创 | 2.52 | 8.10 | 29917.37 | 5.99 | | 688008 | 澜起科 技 | 2.40 | 2.11 | 28413.18 | 9.81 | | 001309 | 德明利 | 4.81 | 8.25 | 24245.75 | 9.21 | | 30161 1 | 珂玛科 | 20.00 | 14.92 | 213 ...

Core Viewpoint - The electronic sector is experiencing significant capital inflow, with a net inflow of 15.577 billion yuan, leading among 31 primary industries in the Shenwan classification [1] Group 1: Market Performance - The electronic ETF (515260) saw an intraday increase of 2.37%, currently up by 2.05%, recovering above the 10-day moving average [1] - In the semiconductor equipment sector, leading companies such as Tuojing Technology and Shengmei Shanghai saw stock increases of over 6% and 5% respectively [2] - In the PCB (Printed Circuit Board) sector, Dongshan Precision and Shenzhen South Circuit both increased by over 6% and 5% respectively, with several other companies also showing strong performance [2] Group 2: Key Stocks and Indices - The top-performing stocks in the electronic ETF index include: - Tuojing Technology: 6.20% increase, total market value of 97.8 billion yuan [3] - Dongshan Precision: 6.18% increase, total market value of 147.1 billion yuan [3] - Huagong Technology: 5.44% increase, total market value of 79.5 billion yuan [3] - Other notable stocks include Aolanmi, Shenzhen South Circuit, and Shengyi Technology, all showing significant gains [3] Group 3: Industry Trends - Micron Technology's stock rose nearly 7% in the US market, boosting confidence in the global memory chip market, with expectations of increased prices for tablet products from brands like Honor and OPPO [4] - The memory chip price increase is expected to lead to a 7%-10% rise in flagship smartphone prices in 2026 [4] - Strong demand for AI is anticipated to drive significant growth in ASIC numbers from major companies like Google and Amazon between 2026 and 2027, positively impacting PCB prices and production [4] Group 4: Investment Tools and Opportunities - The electronic ETF (515260) and its linked funds are designed to passively track the electronic 50 index, focusing on semiconductor and consumer electronics sectors, and are seen as efficient tools for investing in core electronic assets [4] - The external environment is pushing China towards achieving self-sufficiency in the semiconductor industry, with strong policy support expected to benefit the electronic sector [4]