/[Temporary Announcement] Datang Pharmaceutical: Announcement of Proposed Re-appointment of Accounting Firm for 2026
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[Temporary Announcement] Datang Pharmaceutical: Announcement of Proposed Re-appointment of Accounting Firm for 2026

Beijing Stock Exchange
2026/04/29

Securities code: 920433 Securities abbreviation: Datang Pharmaceutical Announcement number: 2026-014

Announcement of Inner Mongolia Datang Pharmaceutical Co., Ltd.’s plan to re-appoint its accounting firm for 2026

The company and all members of the board of directors guarantee that the contents of the announcement are true, accurate and complete, and that there are no false records, misleading statements or major omissions, and bear individual and joint legal liability for the authenticity, accuracy and completeness of the contents.

Regarding the materials and information provided by the accounting firm, the accounting firm guarantees that the materials and information provided, submitted or disclosed by it are true, accurate and complete, and shall not contain false records, misleading statements or major omissions.

1. Basic information on the proposed re-appointment of the accounting firm

(1) Institutional information

The company plans to appoint Dahua Accounting Firm (Special General Partnership) as the audit institution in 2026. 1.Basic information

Name of accounting firm: Dahua Accounting Firm (Special General Partnership)

Date of establishment: February 9, 2012

Organizational form: special general partnership

Registered address: Room 1101, Building 7, No. 16, West Fourth Ring Middle Road, Haidian District, Beijing

Chief Partner: Yang Chenhui

Number of partners at the end of 2024: 150

Number of certified public accountants at the end of 2024: 887

Number of CPAs who have signed securities service business audit reports at the end of 2024: 404 Total income in 2024 (audited): 2,107.3412 million yuan

Audit business income in 2024 (audited): 1,898.8076 million yuan

Securities business income in 2024 (audited): 804.7237 million yuan

Number of audit clients of listed companies in 2024: 112

The top five major industries for audit clients of listed companies in 2024:

Industry serial number Industry category Industry category

I--65 Information transmission, software and information technology services industry Software and information technology services industry

C--39 Manufacturing Computer, communications and other electronic equipment manufacturing industry

C--27 Manufacturing Pharmaceutical Manufacturing Industry

C--35 Manufacturing Special Equipment Manufacturing Industry

D--44 Electricity, heat, gas and water production and supply industry Electricity, heat power production and supply industry

Audit fees for listed companies in 2024: 124.7547 million yuan

The number of audit clients of the company's listed companies in the same industry in 2024: 11

  1. Investor protection capabilities

The closing amount of the occupational risk fund last year: 300 million yuan

Occupational insurance cumulative compensation limit: 500 million yuan

There have been civil lawsuits related to professional conduct in the past three years (the last three complete calendar years and the current year), and there have been civil liabilities in civil lawsuits related to professional conduct.

The cases in which Dahua Accounting Firm (Special General Partnership) has been involved in litigation and assumed civil liability due to its professional conduct in the past three years are: a series of disputes over misrepresentation liability disputes between investors and OLED Optoelectronics Co., Ltd. and Dahua Securities. Dahua Law Firm, as a co-defendant, was judged to bear 5% joint and several liability within the scope of Allred's liability. At present, most of the effective judgments in this series of cases have been fulfilled, and Dahua Law Firm will actively cooperate with the enforcement court to implement subsequent effective judgments. A series of cases concerning misrepresentation liability disputes between investors and Oriental Jinyu Co., Ltd. and Dahua Securities. Dahua Law Firm, as a co-defendant, was sentenced to bear 60% joint liability for compensation within the scope of Dongfang Jinyu’s liability. At present, most of the judgments in this series of cases have been fulfilled, and Dahua Law Firm will actively cooperate with the enforcement court to fulfill the subsequent effective judgments. The total amount of compensation paid in this series of cases is very small. In a series of cases involving misrepresentation liability disputes between investors and Blue Shield Information Security Technology Co., Ltd. and Dahua Securities, Dahua Securities, as a co-defendant, was judged to bear 20% joint and several liability within the scope of Blue Shield Information's liability for compensation. Dahua Securities has completed all judgments in the cases. In a series of cases concerning misrepresentation liability disputes between investors and Chisheng Lianfa Information Technology Co., Ltd. and Dahua Securities, Dahua Securities, as a co-defendant, was judged to bear 20% joint and several liability within the scope of Chisheng Lianfa’s compensation liability. Dahua Securities has completed all judgments in the cases. The above cases will not affect the normal operations of Dahua Law Firm and will not cause significant risks to Dahua Law Firm.

  1. Integrity record

Dahua Accounting Firm (Special General Partnership) has been subject to 0 criminal penalties, 6 administrative penalties, 39 supervisory and management measures, 7 self-regulatory measures and 3 disciplinary sanctions due to professional conduct in the past three years (the last three complete calendar years and the current year).

In the past three years (the last three complete calendar years and the current year), 41 employees have received 0 criminal penalties, 5 administrative penalties, 24 supervisory and management measures, 4 self-regulatory measures and 4 disciplinary sanctions due to their professional behavior.

(2) Project information

1.Basic information

Project partner: Zhou Xin, became a certified public accountant in November 2007, started auditing listed companies and listed companies in January 2019, started practicing at Dahua Accounting Firm in August 2013, and started providing audit services to companies in March 2025; has signed 3 audit reports for listed companies in the past three years.

Signing Certified Public Accountant: Zhang Jie, became a certified public accountant in December 2019, started auditing listed companies in December 2018, began practicing at the firm in September 2020, and began providing audit services to the company in December 2023; the number of audit reports signed by listed companies exceeded 2 times in the past three years.

Project quality control reviewer: Li Hongyi, who became a certified public accountant in February 2004, began to engage in auditing of listed companies and quoted companies in 2007, began practicing at Dahua Accounting Firm in February 2012, and began to engage in review work in December 2021; reviewed the audit reports of 4 listed companies in the past three years.

  1. Integrity record

The project partners, signing certified public accountants, and project quality control reviewers have not been subject to criminal penalties for professional conduct in the past three years (the last three complete calendar years and the current year), have not been subject to administrative penalties, supervisory and management measures by the China Securities Regulatory Commission and its dispatched agencies, and industry authorities, and have been subject to self-regulatory regulatory measures and disciplinary sanctions by self-regulatory organizations such as securities exchanges and industry associations.

  1. Independence

Dahua Accounting Firm (Special General Partnership) and the project partners, signing certified public accountants, and project quality control reviewers can maintain independence when performing the audit work of this project.

  1. Audit charges

The audit fees for this period in 2026 have not been determined, among which the annual report audit fees have not been determined.

The audit fees for the previous period in 2025 were 570,000 yuan, of which the annual report audit fees were 420,000 yuan.

The audit fees for the current period 2026 are based on the number of working man-days required for the audit services provided by Dahua and the service fees charged per working man-day. The number of working days is determined based on the nature, complexity and simplicity of the audit service, etc.; the charging standard for each working day is determined based on the professional skill level of the practitioner.

2. Procedures to be followed by the accounting firm to be re-appointed

(1) Review and voting of proposals by the board of directors

On April 27, 2026, the company held the eighth meeting of the fourth board of directors, and reviewed and approved the "Proposal on Renewing the Company's Audit Institution for 2026" and planned to hire Dahua Accounting Firm (Special General Partnership) to continue as the company's audit institution for 2026.

Voting results: 7 votes in favor; 0 votes against; 0 abstentions.

Circumstances of abstention from voting: This proposal does not involve related transactions and there is no need to abstain from voting.

(2) Audit opinions of the Audit Committee

On April 27, 2026, the first meeting of 2026 of the Audit Committee of the fourth session of the Board of Directors of the company was held. The meeting reviewed and approved the "Proposal on Re-appointment of the Company's Audit Institution for 2026" and agreed to submit it to the company's Board of Directors for review.

Voting results: 3 votes in favor; 0 votes against; 0 abstentions.

(3) Effective date

The appointment of an accounting firm this time still needs to be submitted to the company's shareholders' meeting for review and will take effect from the date of review and approval by the company's shareholders' meeting.

3. Documents for reference

(1) "Resolution of the Eighth Meeting of the Fourth Board of Directors of Inner Mongolia Datang Pharmaceutical Co., Ltd."

(2) "Resolution of the First Meeting of the Audit Committee of the Fourth Board of Directors of Inner Mongolia Datang Pharmaceutical Co., Ltd. in 2026"

Board of Directors of Inner Mongolia Datang Pharmaceutical Co., Ltd.

April 29, 2026