北京东土科技股份有限公司 关于为子公司提供担保的进展公告 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。 一、担保事项的审批 证券代码：300353 证券简称：东土科技 公告编码：2025-097 （2）注册地点：上海市嘉定区云谷路 399 号 20 层 （3）法定代表人：李平 （4）注册资本：53388.4058 万人民币 为满足公司及子公司日常经营和业务发展的资金需求，北京东土科技股份有 限公司（以下简称"东土科技"或"公司"）于 2025 年 3 月 3 日召开的第七届 董事会第三次会议审议通过了《关于向金融机构申请综合授信额度暨为子公司申 请综合授信额度提供担保的议案》，同意公司及子公司拟向金融机构申请最高额 度不超过人民币 200,000 万元的综合授信；同时，为加强公司对外担保的日常管 理，增强公司对外担保行为的计划性与合理性，公司计划为合并报表范围内部分 子公司向银行、非银行金融机构、其他机构申请的授信、借款、票据、保理等业 务提供担保，本次担保额度预计不超过人民币 30,000 万元，期限自第七届董事 会第三次会议审议通过之日起至 2025 年 ...

Market Performance - On September 29, the communication equipment sector rose by 1.31%, with Sanwang Communication leading the gains [1] - The Shanghai Composite Index closed at 3862.53, up 0.9%, while the Shenzhen Component Index closed at 13479.43, up 2.05% [1] Individual Stock Performance - Notable performers included: - Sanwang Communication (688618) with a closing price of 26.97, up 7.11% on a trading volume of 33,500 shares [1] - Kunheng Shunwei (688283) closed at 33.49, up 6.69% with a volume of 29,500 shares [1] - Youfang Technology (651889) at 71.85, up 6.65% with a volume of 75,400 shares [1] - Other significant gainers included Shijia Technology (002796), ST Jinglun (600355), and Guangku Technology (300620) [1] Capital Flow Analysis - The communication equipment sector experienced a net outflow of 1.666 billion yuan from institutional investors and 153 million yuan from speculative funds, while retail investors saw a net inflow of 1.819 billion yuan [2] - Key stocks with significant capital flow included: - New Yisheng (300502) with a net inflow of 500 million yuan from institutional investors, but a net outflow of 322 million yuan from speculative funds [2] - Other stocks like Guangku Technology (300620) and Dekeli (688205) also showed mixed capital flows [2]

Core Viewpoint - The article highlights the positive momentum in the AI sector, driven by significant collaborations among major players like Nvidia and OpenAI, as well as the strong fundamentals of the AI industry chain, suggesting a promising outlook for investments in AI-related companies and ETFs [1]. Group 1: Market Performance - On September 29, the Shanghai Composite Index rebounded after hitting a low, with all three major indices rising. The AI-focused ChiNext ETF (Hua Xia, 159381) saw a gain of 1.64% and a trading volume of 171 million yuan [1]. - Key stocks within the ETF, including Qihua Data, Guangku Technology, and New Yi Sheng, experienced significant price increases [1]. Group 2: AI Industry Developments - Major advancements in the AI sector were reported, with Nvidia and OpenAI announcing a partnership, and Alibaba Cloud collaborating with Nvidia in the Physical AI domain, indicating robust growth in the AI industry chain [1]. - Tianfeng Securities expressed optimism that 2025 could be a pivotal year for domestic AI infrastructure competition and application development [1]. Group 3: Investment Opportunities - The ChiNext AI ETF (Hua Xia, 159381) tracks the ChiNext AI Index, focusing on leading companies in the AI industry chain, with over 50% weight in optical module CPOs, while also covering domestic software and AI application firms [1]. - The ETF features a 20% daily price fluctuation limit, highlighting its high growth and elasticity characteristics, with a management fee of 0.15% and a custody fee of 0.05%, the lowest among similar products, facilitating low-cost investment in AI [1].

Core Viewpoint - The performance of the Zhongzheng 2000 ETF (159531) shows a slight increase of 0.83% as of the midday close on September 29, with a trading volume of 56.6892 million yuan [1] Group 1: ETF Performance - The Zhongzheng 2000 ETF (159531) closed at 1.337 yuan, reflecting a trading volume of 56.6892 million yuan [1] - Since its establishment on September 7, 2023, the fund has achieved a return of 32.65%, while its return over the past month has been -3.22% [1] Group 2: Major Holdings - Key stocks in the Zhongzheng 2000 ETF include: - Meiri Interactive: up 0.67% - Yifang Bio: down 3.75% - Hongchuang Holdings: up 0.76% - Dongtu Technology: up 3.14% - Shijia Photon: up 1.72% - Hengbao Shares: down 4.51% - Hanwei Technology: up 4.16% - Chengdi Xiangjiang: up 0.35% - Tainkang: down 0.68% - Tianyuan Dike: up 1.14% [1]

Core Viewpoint - The performance of the Zhongzheng 2000 ETF managed by Jiashi Fund has shown a return of 37.49% since its establishment on September 14, 2023, despite a recent decline of 3.16% over the past month [1] Group 1: Fund Performance - As of the midday close on September 29, the Zhongzheng 2000 ETF (159535) increased by 0.51%, reaching a price of 1.384 yuan, with a trading volume of 3.11 million yuan [1] - The fund's benchmark is the Zhongzheng 2000 Index return rate [1] Group 2: Top Holdings - Key stocks in the fund include: - Meiri Hudong, up 0.67% - Hanwei Technology, up 4.16% - Hongchuang Holdings, up 0.76% - Dongtu Technology, up 3.14% - Hengbao Co., down 4.51% - Taiji Co., down 0.93% - Rejing Biology, down 1.20% - Shijia Photon, up 1.72% - Huasheng Tiancai, up 1.12% - Tainkang, down 0.68% [1]

29日早盘，"光模块三巨头"领涨，中际旭创同时登顶A股吸金榜+成交榜，热门ETF方面，同类规模最 大、流动性突出的创业板人工智能ETF（159363）震荡走高，场内价格盘中涨超2%，实时成交额超4.3 亿元，交投火热！ 成份股方面，协创数据领涨超5%，新易盛涨逾4%，光库科技、中际旭创、东土科技涨超2%，天孚通 信、同花顺等个股跟涨。 值得关注的是，截至发稿，中际旭创、新易盛分别获主力资金净流入20亿元、12亿元，高居A股吸金榜 第一、第四位。中际旭创、新易盛实时成交额分别为100亿元、94亿元，霸居A股成交榜前两位。 全球AI竞赛正迈入新阶段，以"超大规模、超高能耗、超高投入"为特征的AI基础设施竞争正式拉开帷 幕——从芯片到液冷技术，从算力集群到能源配套，一条贯穿全球的AI算力产业链正在被全面激活。 在AI技术狂飙突进的当下，算力早已成为决定产业上限的关键变量。近日，英伟达宣布与OpenAI达成 战略合作，计划向OpenAI投资高达1000亿美元。此次合作，标志着英伟达在AI算力领域的进一步扩 张，这场"强强联合"构建了软硬件能力全球领先的生态系统，也让AI基础设施竞争的壁垒陡升。 把握以光模块为核心的A ...

Group 1: Communication ETF Performance - The Communication ETF has a turnover rate of 6.11% with a transaction volume of 18.11 million yuan on a single day. The average daily transaction volume over the past month is 50.60 million yuan [1] - Since the beginning of the month, the Communication ETF has seen an increase in scale by 42.68 million yuan, ranking first among comparable funds. Over the last 19 trading days, there have been net inflows on 10 days, totaling 56.56 million yuan [1] - As of September 25, the Communication ETF's net value has increased by 106.58% over the past year, ranking 342 out of 3031 index equity funds, placing it in the top 11.28% [1] Group 2: Alibaba's AI Developments - Alibaba has announced significant advancements in artificial intelligence, including a partnership with NVIDIA for Physical AI and the release of seven large model products, with Qwen3-Max being the strongest model to date [2] - The CEO of Alibaba stated that the company will invest an additional 380 billion yuan in AI infrastructure [2] - According to CITIC Securities, the capital expenditure driven by AI has substantial long-term potential, with a shift from network investment to computing power investment, indicating a strong growth trajectory for cloud services [2] Group 3: Optical Communication Sector Insights - Recent volatility in the optical communication sector has been noted, but strong demand and large orders in the overseas AI computing power market suggest that the fundamentals of the optical module industry remain solid [3] - The AI-driven expansion cycle in computing power is far from over, and the current market adjustments may provide better investment opportunities for investors [3] - As of August 29, 2025, the top ten weighted stocks in the Guozheng Communication Index account for 64.43% of the index, including companies like XinYiseng, Zhongji Xuchuang, and ZTE [3] Group 4: Stock Performance Overview - The stock performance of key companies in the optical communication sector shows varied results, with Zhongji Xuchuang down by 2.05%, China Telecom down by 0.45%, and ZTE down by 3.21% [5] - Investors can consider the Communication ETF linked fund (019072) to capitalize on investment opportunities in optical communication under the AI transformation [5]

Core Viewpoint - The performance of the Zhongzheng 2000 ETF (159531) shows a slight decline, with a midday drop of 0.52% and a trading volume of 57.03 million yuan, indicating market volatility and investor sentiment [1] Group 1: ETF Performance - The Zhongzheng 2000 ETF (159531) closed at 1.342 yuan, reflecting a decrease of 0.52% [1] - Since its establishment on September 7, 2023, the fund has achieved a return of 34.73%, while its return over the past month has been -1.68% [1] Group 2: Top Holdings Performance - Among the top holdings, Meiri Interaction increased by 1.77%, while Yifang Bio decreased by 2.78% [1] - Other notable movements include Hongchuang Holdings up by 3.70%, Dongtu Technology down by 1.64%, and Hengbao Shares up by 4.19% [1] - The performance of Hanwei Technology decreased by 3.13%, and Chengdi Xiangjiang fell by 2.45% [1]

Group 1 - The company Dongtu Technology (300353) clarified on September 24 that its industrial network communication business does not involve OCS optical circuit switch products [1]

Core Viewpoint - Dongtu Technology (300353) does not directly produce humanoid robots but focuses on providing foundational technology support in the field of embodied robots [1] Group 1: Company Overview - The company's Hongdao operating system is involved in national major projects and possesses fully autonomous and controllable attributes [1] - Dongtu Technology's AUTBUS bus network is the only domestic bus technology that has received international standards certification [1] Group 2: Technological Capabilities - The combination of the Hongdao operating system and AUTBUS bus network can create a robotic electronic architecture with time-deterministic networks and deterministic computing capabilities [1] - This architecture supports the high safety, high performance, and high-quality development of embodied robots, providing autonomous and controllable foundational technology assurance [1]