Announcement on Re-appointment of Accounting Firm

Securities Code: 002297 Securities Abbreviation: Boyun New Materials Serial Number: 2026-014 Hunan Boyun New Materials Co., Ltd. Announcement on Re-appointment of Accounting Firm The Company and all members of the Board of Directors guarantee that the information disclosed is true, accurate, and complete, and contains no false records, misleading statements, or major omissions. Hunan Boyun New Materials Co., Ltd. (hereinafter referred to as the "Company") held the 25th meeting of the 7th Board of Directors on April 8, 2026, which reviewed and approved the "Proposal on Re-appointment of Accounting Firm of Hunan Boyun New Materials Co., Ltd.". It was agreed to continue to appoint Lixin Certified Public Accountants (Special General Partnership) (hereinafter referred to as "Lixin") as the Company's financial audit institution for 2026. This proposal needs to be submitted to the Company's shareholders' meeting for review. The specific content is hereby announced as follows: I. Explanation of the Matter of Re-appointment of Accounting Firm Lixin possesses the qualifications for auditing securities and futures businesses and has the experience and capability to provide audit services for listed companies. The firm provided audit services for the Company's 2025 annual report and has not violated the independence requirements of the "Code of Professional Ethics for Chinese Certified Public Accountants". Lixin served as the Company's financial audit institution for 2025 and has conscientiously fulfilled the responsibilities and obligations stipulated by both parties during its tenure as the Company's audit institution, strictly adhering to the professional standards of independence, objectivity, and fairness. In 2025, Lixin's audit fee for the Company's financial audit services was RMB 6.5 million, and the internal control audit fee was RMB 1 million, totaling RMB 7.5 million. To maintain the continuity of the Company's audit work, the Company proposes to re-appoint Lixin as the Company's audit institution for 2026. In 2026, Lixin's audit fee for the Company's financial audit services will be RMB 6.5 million, and the internal control audit fee will be RMB 1 million, totaling RMB 7.5 million. This proposal needs to be submitted to the Company's shareholders' meeting for review. II. Basic Information of the Proposed Accounting Firm (I) Institutional Information Lixin Certified Public Accountants (Special General Partnership) (hereinafter referred to as "Lixin") was founded by Dr. Pan Xulun, a renowned Chinese accountant, in Shanghai in 1927. It was re-established in 1986 and became the first special general partnership accounting firm in China to complete its restructuring in 2010. Its registered address is in Shanghai, and its chief partner is Mr. Zhu Jiandi. Lixin is a member of the international accounting network BDO. It has long been engaged in securities service business. Before the implementation of the new Securities Law, it held securities and futures business licenses, has H-share audit qualifications, and is registered with the Public Company Accounting Oversight Board (PCAOB). As of the end of 2025, Lixin had 300 partners, 2,523 certified public accountants, and a total of 9,933 employees. Among them, 802 certified public accountants have signed audit reports for securities service businesses. Lixin's business revenue for 2025 (unaudited) was RMB 5.00 billion, of which audit business revenue was RMB 3.672 billion and securities business revenue was RMB 1.505 billion. In 2025, Lixin provided annual report audit services for 770 listed companies, with audit fees of RMB 916 million. (II) Basic Information The basic information of the engagement partner, signing certified public accountant, and project quality control reviewer is as follows: Engagement Partner/Proposed Signing Accountant 1, Li Xinmin, became a certified public accountant in 2003 and began to engage in listed company audits in 2008. He began practicing at this firm in 2008 and started providing audit services to this Company in 2022. In the past three years, he has signed audit reports for 7 listed companies and reviewed audit reports for 0 listed companies. Proposed Signing Accountant 2, Zhou Yang, became a certified public accountant in 2020 and began to engage in listed company audits in 2020. He began practicing at this firm in 2022. In the past three years, he has signed audit reports for 0 listed companies and reviewed audit reports for 0 listed companies. Information on the Quality Control Reviewer: According to Lixin's quality control policies and procedures, Zheng Bin and his team will be responsible for project quality control review. Zheng Bin became a Chinese certified public accountant in 2004 and began to engage in listed company audit business in 2002. He began practicing at Lixin in 2004. He has been engaged in securities service business for many years, responsible for auditing and reviewing multiple listed companies, and possesses corresponding professional competence. (III) Integrity Records of the Above-mentioned Personnel The engagement partner, signing certified public accountant, and quality control reviewer have not violated the independence requirements of the "Code of Professional Ethics for Chinese Certified Public Accountants". The above-mentioned personnel have not been subject to criminal penalties, administrative penalties, administrative supervision measures, or self-regulatory measures in the past three years. (IV) Investor Protection Capability As of the end of 2025, Lixin had accumulated RMB 171 million in its professional risk fund and purchased professional insurance with a cumulative insured amount of RMB 1.05 billion. This professional insurance can cover civil compensation liabilities arising from audit failures. 情况: Litigation (Arbitration) Plaintiff (Arbitration) Defendant (Arbitration) Litigation (Arbitration) Matter Litigation (Arbitration) Amount Litigation (Arbitration) Outcome Investor Jinya Technology, Zhou Xuhui, 2014 Annual Report Remaining RMB 5 million Part of the investors filed a civil lawsuit against Jinya Technology and Lixin on the grounds of securities misrepresentation. According to the effective judgment of the competent people's court, Jinya Technology bears 12.29% of the investors' losses, and Lixin bears joint and several liability. Lixin's insured professional liability insurance is sufficient to cover the compensation amount, and the effective judgments have been fulfilled. A portion of investors filed civil lawsuits against Baoliang, Lixin, Yinxin Pinggu, and Dongbei Securities on the grounds of misrepresentation in Baoliang's 2015 annual report, 2016 interim report, annual report, and 2017 interim report, as well as temporary announcements. Lixin did not receive administrative penalties, but the competent people's court ordered Lixin to bear supplementary compensation liability for 15% of the debts owed by Baoliang due to misrepresentation from December 30, 2016, to December 29, 2017. Currently, the winning investors have applied for enforcement against Lixin, and the court has accepted the case and will deduct the enforcement amount from the firm's account. The funds in Lixin's account are sufficient to pay the investors' enforcement amounts, and Lixin has purchased adequate professional liability insurance for accounting firms, which is sufficient to effectively resolve litigation risks and ensure that effective legal documents are duly executed. (V) Integrity Record In the past three years, Lixin has received 0 criminal penalties, 7 administrative penalties, 42 supervisory measures, 6 self-regulatory measures, and 3 disciplinary actions for its professional conduct, involving 151 employees. (VI) Independence Lixin Certified Public Accountants, the engagement partner, the signing certified public accountant, and the project quality control reviewer have no circumstances that may affect their independence.