Announcement on the Proposed Re-appointment of the Accounting Firm for 2026

Stock Code: 001332 Stock Abbreviation: Xizhuang Shares Announcement No.: 2026-016

Wuxi Chemical Industry Equipment Co., Ltd.

Announcement on the Proposed Re-appointment of the Accounting Firm for 2026

The Company and the entire Board of Directors guarantee that the information disclosed is true, accurate, and complete, and contains no false records, misleading statements, or major omissions.

Special Notes:

1. Name of the accounting firm to be re-appointed: Beijing Dehao International Certified Public Accountants (Special General Partnership) (hereinafter referred to as "Beijing Dehao International");
2. To meet the audit needs of Wuxi Chemical Industry Equipment Co., Ltd. (hereinafter referred to as the "Company") for 2026, the two parties have established a cooperation intention based on the principles of objectivity, fairness, and responsibility. The proposed re-appointment of the accounting firm complies with the relevant provisions of the "Administrative Measures for the Selection of Accounting Firms by State-owned Enterprises and Listed Companies" (Cai Kuai [2023] No. 4).

The Company's Fourth Board of Directors' Twenty-Second Meeting was held on April 24, 2026, and approved the "Proposal on the Proposed Re-appointment of the Accounting Firm for 2026". It is proposed to appoint Beijing Dehao International as the audit institution for the Company's 2026 financial reports and internal control, and this matter will be submitted to the Company's 2025 Annual Shareholders' Meeting for review. The relevant matters are hereby announced as follows:

I. Basic Information of the Proposed Re-appointed Accounting Firm

(I) Institutional Information

1. Basic Information Institution Name: Beijing Dehao International Certified Public Accountants (Special General Partnership) (hereinafter referred to as "Beijing Dehao International") Date of Establishment: December 8, 2008 Organizational Form: Special General Partnership

Registered Address: 519A, 31 Fuchenmenwai Street, Xicheng District, Beijing Chief Partner: Zhao Huanqi

As of December 31, 2025, Beijing Dehao International has 72 partners and 296 certified public accountants, of whom 165 have signed securities service business audit reports.

The total revenue for 2025 was RMB 40,109.58 million (audited, same below), of which audit business revenue was RMB 32,890.81 million and securities business revenue was RMB 18,700.69 million. The number of listed company audit clients in 2025 was 129, mainly in the manufacturing, information transmission, software and information technology services, scientific research and technical services, water conservancy, environmental and public facilities management, wholesale and retail industries. The number of audit clients of listed companies in the same industry as our company is 87.