Core Viewpoint - The company is planning to acquire 100% equity of Hainan Hailan Universe Marine Information Technology Co., Ltd. from its 17 shareholders through a combination of issuing shares and cash payment, while also raising matching funds from up to 35 specific investors [1] Group 1: Independence of the Evaluation Agency - The evaluation agency, Walkson (Beijing) International Asset Appraisal Co., Ltd., was selected through a compliant process and possesses the necessary qualifications and professional experience to conduct the evaluation [2] - There are no relationships or conflicts of interest between the evaluation agency and the company, its shareholders, or the target company, ensuring the agency's independence [2] Group 2: Reasonableness of Evaluation Assumptions - The assumptions and limitations set forth in the asset evaluation report comply with national regulations and market practices, reflecting the actual situation of the evaluation object [2] Group 3: Relevance of Evaluation Methods to Objectives - The purpose of the evaluation is to determine the market value of the target assets as of the evaluation benchmark date, providing a reference for the transaction [3] - The evaluation agency followed relevant laws and industry standards, ensuring that the evaluation methods used were appropriate and the results were fair and accurate [3] Group 4: Fairness of Evaluation Pricing - The evaluation results reflect the actual situation of the evaluation object on the benchmark date, and the transaction price was determined through negotiation among the parties, ensuring fairness [3] - The evaluation results are in accordance with the provisions of the Securities Law and do not harm the interests of the company or minority shareholders [3] Group 5: Summary of Evaluation Agency's Role - The evaluation agency, Walkson (Beijing) International Asset Appraisal Co., Ltd., is independent, the evaluation assumptions are reasonable, the methods align with the objectives, and the pricing is fair [4]

Core Viewpoint - Beijing Hailanxin Data Technology Co., Ltd. plans to acquire 100% equity of Hainan Hailan Universe Marine Information Technology Co., Ltd. from its 17 shareholders through a combination of issuing shares and cash payment, while also raising supporting funds by issuing stocks to no more than 35 specific investors [1][2]. Group 1 - The company has engaged the accounting firm Crowe Horwath to provide a review report for the 2024 annual and the first quarter of 2025 financial statements [2]. - The company has also hired Tianjian Accounting Firm to issue an audit report related to the transaction [2]. - Walkerston (Beijing) International Asset Appraisal Co., Ltd. has been appointed to evaluate the total equity value of the target asset and has issued an asset appraisal report [2]. Group 2 - The board of directors intends to use the aforementioned audit reports, asset appraisal reports, and review reports for information disclosure related to the transaction and as submission materials to regulatory authorities [2].

Group 1 - The independent financial advisor, Guotai Junan Securities Co., Ltd., has been appointed by Beijing Hailanxin Data Technology Co., Ltd. to conduct due diligence and internal verification for the transaction involving the issuance of shares and cash payment for asset acquisition [1] - The independent financial advisor has committed that their professional opinions do not differ materially from the content disclosed by the listed company [1] - The disclosed documents meet the required content and format standards, and the restructuring plan complies with relevant laws, regulations, and the requirements of the China Securities Regulatory Commission and Shenzhen Stock Exchange [1] Group 2 - The independent financial advisor has ensured that the information disclosed is true, accurate, and complete, with no false records, misleading statements, or significant omissions [1] - Strict confidentiality measures and risk control protocols are in place to prevent insider trading, market manipulation, and securities fraud [1]

经核查，独立财务顾问认为，截至本核查意见出具之日，在本次交易前十二 个月内，上市公司不存在《上市公司重大资产重组管理办法》规定的与本次交易 相关的购买、出售资产的交易行为，不存在需纳入本次交易的累计计算范围的情 况。 （以下无正文） 国泰海通证券股份有限公司 关于北京海兰信数据科技股份有限公司本次重组前 12 个月内 购买、出售资产的核查意见 北京海兰信数据科技股份有限公司（以下简称"公司"或"上市公司"）拟 通过发行股份及支付现金方式购买海南省信息产业投资集团有限公司等海南海 兰寰宇海洋信息科技有限公司（以下简称"海兰寰宇"或"标的公司"）全体 17 名股东（以下简称"交易对方"）合计持有的海兰寰宇 100%股权（以下简称"标 的资产"），同时拟向不超过 35 名特定投资者发行股票募集配套资金（以下简称 "本次交易"或"本次重组"）。 根据《上市公司重大资产重组管理办法》第十四条的规定："上市公司在十 二个月内连续对同一或者相关资产进行购买、出售的，以其累计数分别计算相应 数额。已按照本办法的规定编制并披露重大资产重组报告书的资产交易行为，无 须纳入累计计算的范围。中国证监会对本办法第十三条第一款规定的重大 ...

Core Viewpoint - The document provides a special verification opinion on the establishment and execution of the insider information registrant system of Beijing Hailanxin Data Technology Co., Ltd. (Hailanxin) in relation to its acquisition of 100% equity of Hainan Huanyu Ocean Information Technology Co., Ltd. [1][2] Summary by Sections Establishment of the Insider Information Registrant System - Hailanxin established its insider information registrant system and disclosed it on the Shenzhen Stock Exchange website. The system was revised during the board meeting on August 7, 2012, and subsequently disclosed [4]. Execution of the Insider Information Registrant System - Hailanxin implemented confidentiality measures for the transaction, including written confidentiality agreements with intermediary institutions. Insiders are prohibited from disclosing transaction information to others and from trading Hailanxin's stock based on insider information. The list of insiders was reported to the Shenzhen Stock Exchange [4][5]. Verification Opinion - The law firm conducting the verification concluded that Hailanxin complied with relevant laws and regulations regarding the registration and reporting of insiders, and that appropriate confidentiality measures were taken [5].

Group 1 - The company intends to acquire 100% equity of Hailan Huanyu Ocean Information Technology Co., Ltd. through a combination of issuing shares and cash payment, along with raising supporting funds [1][2] - The independent financial advisor, Guotai Junan Securities Co., Ltd., confirms that the transaction complies with relevant regulations, including the Securities Issuance Registration Management Measures and the Continuous Supervision Measures for GEM Listed Companies [1][2][3] - The transaction does not involve any circumstances that would prevent the issuance of shares to specific targets as outlined in the Securities Issuance Registration Management Measures [2][3] Group 2 - The targeted company operates in the "Information Transmission, Software and Information Technology Services" sector, specifically in "IoT Technology Services," which aligns with the GEM's focus on innovative and growth-oriented enterprises [4][5] - The share issuance price for the transaction is set at 6.74 yuan per share, which meets the requirement of being no less than 80% of the average stock price over the previous 20 trading days [5] - The transaction is not classified as a restructuring listing and therefore does not fall under specific rules for major asset restructuring [5]

交易标的业绩真实性的专项核查意见 天健函〔2025〕1-60 号 专此报告，请予察核。 天健会计师事务所（特殊普通合伙） 中国注册会计师： 中国·杭州 中国注册会计师： 二〇二五年八月十二日 第 1 页 共 1 页 深圳证券交易所： 根据中国证券监督管理委员会《公开发行证券的公司信息披露内容与格式准 则第 26 号——上市公司重大资产重组》（证监会公告〔2023〕57 号）的要求， 我们对北京海兰信数据科技股份有限公司重大资产重组交易标的海南海兰寰宇 海洋信息科技有限公司（以下简称海兰寰宇公司）2023 年-2025 年 3 月的业绩真 实性进行了审慎核查，汇报如下。 我们对海兰寰宇公司 2023 年-2025 年 3 月的财务报表进行了审计，出具了 无保留意见的《审计报告》（天健审〔2025〕1-1734 号）。在审计过程中，我 们已对海兰寰宇公司 2023 年-2025 年 1-3 月业绩真实性予以了关注，并获取了 充分、适当的审计证据。 我们实施风险评估程序对公司财务报表可能存在重大错报的风险领域进行 了识别，将海兰寰宇公司收入确认方面假定为具有舞弊风险，将重大交易评估为 具有特别风险，并采取了特别的应 ...

Core Viewpoint - The transaction involves Beijing Hailanxin Data Technology Co., Ltd. acquiring 100% equity of Hainan Hailanhuanyu Ocean Information Technology Co., Ltd. through a combination of share issuance and cash payment, along with raising supporting funds from specific investors [1][2]. Group 1: Industry and Policy Compliance - The transaction does not fall under the categories of industries or enterprises supported for mergers and acquisitions as per the State Council and relevant ministries, but it is part of the "new generation information technology" sector, which is recognized for support in mergers and acquisitions [1]. - The independent financial advisor confirms that the transaction aligns with the regulatory guidelines for significant asset restructuring [1]. Group 2: Transaction Type and Structure - The main business of the target company involves radar monitoring products and services, which positions it within the same industry or upstream/downstream of the listed company, indicating that the transaction is a related merger and does not constitute a restructuring listing [2]. - The transaction involves the issuance of shares as part of the significant asset restructuring process [2]. - There are no ongoing investigations by the China Securities Regulatory Commission against the listed company as of the date of the advisory opinion [2].

Core Viewpoint - Beijing Hailanxin Data Technology Co., Ltd. plans to issue shares and pay cash to acquire 100% equity of Hainan Hailan Huanyu Ocean Information Technology Co., Ltd. The asset evaluation report indicates a significant increase in the market value of the target company’s equity as of March 31, 2025, with a valuation of 1.05062 billion yuan, reflecting a substantial appreciation from its book value [4][6]. Group 1: Evaluation Purpose and Methodology - The evaluation aims to assess the market value of Hainan Hailan Huanyu Ocean Information Technology Co., Ltd. as part of the acquisition process by Beijing Hailanxin Data Technology Co., Ltd. [4] - The evaluation methods employed include the asset-based approach and the income approach, ensuring a comprehensive assessment of the target company's value [5]. Group 2: Evaluation Results - As of March 31, 2025, the book value of the equity attributable to the parent company of Hainan Hailan Huanyu Ocean Information Technology Co., Ltd. is reported at 194.9642 million yuan, while the assessed value of the total equity is 1.0506206 billion yuan, resulting in an appreciation of 855.6564 million yuan, which corresponds to an increase rate of 438.88% [5][6]. - The assessed value of the equity under the parent company’s scope is 1.0506206 billion yuan, with an appreciation of 824.6052 million yuan, reflecting a growth rate of 364.84% [6]. Group 3: Validity and Special Considerations - The evaluation conclusion is valid for one year from the assessment base date, March 31, 2025, until March 30, 2026, provided that there are no significant changes in the business environment affecting the operational status of the evaluated entity [6][7]. - Special considerations regarding guarantees, leases, and contingent liabilities related to the evaluated entity are noted, emphasizing the importance of understanding these factors in the context of the evaluation [7][8].

Group 1 - The independent financial advisor conducted a review of the insider information registrant system established by Beijing Hailanxin Data Technology Co., Ltd. and confirmed its compliance with relevant laws and regulations [1][2] - The company has implemented necessary confidentiality measures during the planning of the transaction, limiting the knowledge of sensitive information to relevant parties [1] - The company registered the insider information registrants related to the transaction and created a memorandum documenting the transaction's specific stages and progress, including discussions, communications, and participant details [1][2] Group 2 - The independent financial advisor concluded that the insider information registrant system was properly established and executed in accordance with applicable legal and regulatory requirements [2] - The company adhered to confidentiality obligations prior to the legal disclosure of the transaction and executed the registration and reporting of insider information registrants as per the established system [2]