Core Viewpoint - The Ministry of Commerce announced an anti-dumping investigation into imported dichlorodihydrosilane from Japan, which has led to significant stock price increases for several domestic gas companies, indicating potential growth opportunities in the semiconductor materials sector [1] Group 1: Industry Impact - The investigation period for the anti-dumping case is set from July 1, 2024, to June 30, 2025, with the damage investigation period from January 1, 2022, to June 30, 2025 [1] - Dichlorodihydrosilane is primarily used in the chip manufacturing process for thin film deposition, applicable in the production of logic chips, memory chips, analog chips, and other types of chips [1] Group 2: Company Developments - Domestic leading companies have achieved technological breakthroughs and secured orders, with Sanfu Co., Ltd. showing notable performance [1] - In December 2023, Sanfu's wholly-owned subsidiary's electronic-grade DCS product passed quality verification by TSMC and delivered its first batch of official products [1] - By September 2025, Sanfu reported successful promotion of this product in high-end applications for international clients, with increasing sales volume from domestic customers [1] - Sanfu's project for an annual production capacity of 500 tons of electronic-grade dichlorodihydrosilane has completed construction and entered trial production, with capacity set to be released soon [1]

Market Overview - A-shares showed mixed performance with the Shanghai Composite Index rising by 0.09% to 4089.45 points, while the Shenzhen Component Index fell by 0.2% to 14003.09 points, and the ChiNext Index decreased by 0.52% to 3312.47 points [1] - The total trading volume in the Shanghai and Shenzhen markets reached 1.77 trillion yuan, with over 3700 stocks rising, including 80 stocks hitting the daily limit [1] Key Sectors Commercial Aerospace - The commercial aerospace sector remained strong, with multiple stocks hitting the daily limit, including Galaxy Electronics with four consecutive limit-ups [3] - The sector is entering a new phase of rapid development, with significant catalysts expected in the near future [3] Controlled Nuclear Fusion - The controlled nuclear fusion sector continued its strong performance, with several stocks, including China Nuclear Engineering, hitting the daily limit [2] - The sector is gaining attention due to breakthroughs in high-temperature superconductors and artificial intelligence, with a focus on engineering and commercial viability [2] Computing Power Chips - The computing power chip sector saw gains, with Haiguang Information rising over 10% [4] - The Ministry of Industry and Information Technology has issued guidelines to enhance AI computing power supply, supporting the development of key technologies [4] Electronic Chemicals - The electronic chemicals sector experienced an uptick, with stocks like Sanfu Co. and Heyuan Gas hitting the daily limit [5] - The Ministry of Commerce has initiated an anti-dumping investigation into imported dichlorodihydrosilane from Japan, which may impact the domestic industry [5] Institutional Insights Citic Securities - Citic Securities suggests a higher probability of market upward movement in 2026, driven by the balance between external and internal demand [6] - The firm recommends focusing on sectors with lower concentration but increasing attention and catalysts, such as chemicals and engineering machinery [7] Zhongtai Securities - Zhongtai Securities maintains a cautiously optimistic view on the technology sector, suggesting that funds may tighten temporarily but could lead to buying opportunities [8] - The firm emphasizes the importance of direction selection and rhythm control in investment strategies [8] Everbright Securities - Everbright Securities notes increasing divergence among market funds, indicating potential volatility risks [9] - The firm highlights the AI concept on the edge, with an upcoming AI hardware exhibition expected to stimulate related sectors [9]

Group 1 - The electronic gas sector experienced a significant surge in early trading on January 8, with companies such as Sanfu Co., Ltd. and Heyuan Gas hitting the daily limit up [1] - Other companies in the sector, including Jinhong Gas, Huate Gas, Silane Technology, and Yake Technology, also saw notable increases in their stock prices [1]

Industry Overview - The Ministry of Commerce has initiated an anti-dumping investigation on imported dichlorodihydrosilane (DCS) from Japan starting January 7 [1] - DCS is a key material for thin film deposition in chip manufacturing, widely used in logic and memory chips, and can also synthesize silicon-based precursors [1] - The global market for DCS is highly concentrated, with the top five manufacturers holding 78.0% market share as of 2023, including major producers like Shinetsu and Nippon Sanso [1] - The global market size for DCS is projected to reach $1.6 billion by 2030, with a compound annual growth rate (CAGR) of 6.1% from 2024 to 2030 [1] Market Drivers - Growth in the semiconductor industry and technological innovations in the electronics sector are core drivers for the DCS market [1] - The demand for semiconductor devices continues to rise due to advancements in smartphones, AI, and 5G communications, which in turn boosts the demand for high-purity silicon materials and DCS [1] - The expansion of the semiconductor manufacturing industry in the Asia-Pacific region, with increased investments from countries like China and South Korea, further enhances market demand [1] Product Insights - Products with ≥99.9% purity dominate the DCS market, with the semiconductor sector being the largest downstream market, accounting for 76.2% of the demand [1] - The increasing quality requirements in the semiconductor industry are expected to sustain the demand for high-purity DCS, alongside the expansion of emerging technology applications [1] Company Developments - Jinhong Gas has indicated that electronic-grade DCS is one of the products planned for its convertible bond fundraising project, "New High-end Electronic Materials Project," which has successfully entered trial production, with an expected capacity of 200 tons per year upon reaching full production [3] - Sanfu Co., Ltd. is the applicant for the anti-dumping investigation, and its electronic-grade DCS products have passed quality verification in 2023, achieving bulk supply [3] Supply Chain Dynamics - The upstream supply chain includes suppliers of raw silicon and chlorine, while the downstream directly connects to semiconductor manufacturing companies, with DCS producers positioned in the midstream [2]

证券代码：603938 证券简称：三孚股份 公告编号：2026-001 拟签字注册会计师：张少波先生，2022 年获得中国注册会计师资质，2020 年开始从事上市公司审计，2025 年开始在中瑞诚执业，2025 年开始为本公司提 供审计服务，近三年签署和复核的上市公司 0 家。 （二）诚信记录情况 张少波先生近三年无执业行为受到刑事处罚，无受到证监会及其派出机构、 行业主管部门的行政处罚、监督管理措施，无受到证券交易场所、行业协会等自 律组织的自律监管措施、纪律处分等情况。 （三）独立性说明 张少波先生不存在违反《中国注册会计师职业道德守则》对独立性要求的情 形。 唐山三孚硅业股份有限公司 关于变更签字会计师的公告 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、准确性和完整性承担个别及连带责任。 唐山三孚硅业股份有限公司（以下简称"公司"）于 2025 年 10 月 23 日召 开第五届董事会第十六次会议，于 2025 年 11 月 10 日召开 2025 年第一次临时股 东大会，审议通过了《关于聘任会计师事务所的议案》，同意聘任中瑞诚会计师 事务所（特 ...

Core Viewpoint - Tangshan Sanfu Silicon Industry Co., Ltd. has successfully passed the acceptance of its new project for the filling and storage of high-purity tetraethyl orthosilicate, marking a significant step towards domestic production and supply of this key semiconductor material, which has historically relied on imports [2][3]. Group 1: Project Details - The project involves the expansion of an annual production line for 8,000 tons of high-purity tetraethyl orthosilicate, with a total investment of 17 million yuan [2]. - The project utilizes an integrated model of "pipeline transportation + filling and storage," using self-produced electronic-grade silicon tetrachloride as raw material [2]. - The successful launch of this project enhances the company's product offerings and strengthens its competitive position in the electronic chemicals sector [3]. Group 2: Market Implications - The domestic market for tetraethyl orthosilicate is expected to grow rapidly due to increasing demand from industries such as artificial intelligence and new energy vehicles [3]. - The company has begun delivering products to major domestic clients and is sending samples to international customers, indicating the formation of initial import substitution capabilities [3]. - The project is seen as a critical support for the self-sufficiency of China's semiconductor supply chain, particularly in the silicon-based precursor materials segment [2][3]. Group 3: Industry Context - The national government is increasing support for the semiconductor materials sector, promoting the acceleration of domestic production of high-end electronic chemicals [4]. - The global shift of third-generation semiconductor production capacity, such as silicon carbide and gallium nitride, to China is driving up demand for upstream materials [4]. - The company’s core advantage lies in its circular economy supply chain from chlorosilane to electronic specialty gases and precursor materials, which can reduce sales costs due to overlapping customer bases [4]. Group 4: Future Outlook - The next 3 to 5 years are considered a critical window for the development of domestic semiconductor material companies, emphasizing the need for technological iteration and capacity layout [5]. - If the company can continue to deepen its involvement in the tetraethyl orthosilicate sector and expand into more silicon-based precursor products, it has the potential to become a leading platform enterprise in the domestic electronic materials market [5].

二、对公司的影响 唐山三孚硅业股份有限公司关于全资子公司 "正硅酸乙酯充装及储存项目"验收合格的公告 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、准确性和完整性承担个别及连带责任。 一、项目基本情况 唐山三孚硅业股份有限公司（以下简称"公司"）通过整体规划，利用集团内 各子公司的产业优势，于近期实现了8000吨/年高纯正硅酸乙酯的生产及充装能力。 其中由控股子公司唐山三孚新材料有限公司（以下简称"三孚新材料"）扩建"年 产8000吨高纯正硅酸乙酯"专项生产线，已建设完毕并投产；由全资子公司唐山三 孚电子材料有限公司（以下简称"三孚电子材料"）新建"正硅酸乙酯充装及储存 项目"，已于近日建设完毕并验收合格，取得相关批复许可。以上两项目合计投资 人民币1700万元。 高纯正硅酸乙酯产品以公司电子级四氯化硅为原材料，在三孚新材料进行生产 后经管道输送至三孚电子材料进行充装及存储。目前该产品已实现国内主要客户顺 利交付并已向国际客户送样，产品质量符合客户要求并形成进口替代。 该产品为电子级正硅酸乙酯的原材料，同时也应用于碳化硅、高纯合成石英等 领域。电子级正硅 ...

Group 1 - The chemical raw materials sector experienced a decline of 0.21% compared to the previous trading day, with Sanfu Co., Ltd. leading the decline [1] - The Shanghai Composite Index closed at 3965.28, up 0.04%, while the Shenzhen Component Index closed at 13537.1, down 0.49% [1] - Notable gainers in the chemical raw materials sector included Hualitai, which rose by 9.99% to a closing price of 15.30, and Weiyuan Co., which increased by 8.03% to 16.82 [1] Group 2 - The chemical raw materials sector saw a net outflow of 350 million yuan from institutional investors, while retail investors contributed a net inflow of 278 million yuan [2] - Major stocks with significant net inflows from retail investors included Weiyuan Co. with 69.46 million yuan and Hualitai with 67.40 million yuan [3] - Conversely, institutional investors showed a net outflow in several stocks, including Weiyuan Co. and Hualitai, indicating a shift in investment sentiment [3]

Core Viewpoint - Sanfu Co., Ltd. has successfully achieved a production and filling capacity of 8,000 tons/year of high-purity tetraethyl orthosilicate through strategic planning and leveraging the industrial advantages of its subsidiaries [1][2] Group 1: Production and Investment - The expansion of the production line for "annual output of 8,000 tons of high-purity tetraethyl orthosilicate" has been completed and is now operational [1] - The new "tetraethyl orthosilicate filling and storage project" has also been completed and passed inspection, receiving the necessary approvals [1] - The total investment for these two projects amounts to RMB 17 million [1] Group 2: Product Applications and Market Development - High-purity tetraethyl orthosilicate is produced using the company's electronic-grade silicon tetrachloride as raw material and is transported to Sanfu Electronic Materials for filling and storage [1] - The product has been successfully delivered to major domestic customers and samples have been sent to international clients, meeting quality requirements and forming an import substitution [1] - This product serves as a precursor material for electronic-grade tetraethyl orthosilicate, primarily used in storage chips and logic chips, and has synergies with existing electronic specialty gas products [1][2] Group 3: Strategic Impact - The successful launch of this project enriches the company's product categories and enhances the circular economy industrial chain, contributing to improved overall competitiveness [2]

名称：唐山三孚新材料有限公司 唐山三孚硅业股份有限公司 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、准确性和完整性承担个别及连带责任。 唐山三孚硅业股份有限公司（以下简称"公司"）于 2025 年 12 月 11 日召 开第五届董事会第十七次会议，审议通过了《关于对控股子公司增资的议案》， 为进一步增强公司控股子公司唐山三孚新材料有限公司（以下简称"三孚新材料"） 在硅烷偶联剂方向的项目研发、市场拓展、产品量产等方面的综合实力，公司拟 以自有资金 28,000 万元对三孚新材料进行增资，增资后三孚新材料注册资本由 100,000 万元变更为 128,000 万元，公司直接持有三孚新材料 95.74%的股权，同 时通过公司控股子公司唐山三孚科技有限公司（以下简称"三孚科技"）控制三 孚新材料 4.10%的股权。详细内容请见公司于 2025 年 12 月 12 日在上海证券交 易所网站（http://www.sse.com.cn）及公司指定信息披露媒体《证券日报》上 披露的《关于对控股子公司增资的公告》（公告编号：20 ...