Beijing Xinghua Certified Public Accountants (Special General Partnership) BEIJING XINGHUA CERTIFIED PUBLIC ACCOUNTANTS (SPECIAL GENERAL PARTNERSHIP) Audit Report on the Implementation of 2025 Performance Commitments for Wuxi DiCo Electronic Materials Co., Ltd.'s Cash Purchase of Jiangsu Jingkai Semiconductor Technology Co., Ltd.
[2026] Jinghui Special Word No. 01290004
To all shareholders of Wuxi DiCo Electronic Materials Co., Ltd.:
We have been entrusted to conduct a special audit of the "Explanation on the Implementation of 2025 Performance Commitments for Wuxi DiCo Electronic Materials Co., Ltd.'s Cash Purchase of Jiangsu Jingkai Semiconductor Technology Co., Ltd." (hereinafter referred to as the "Special Explanation"), prepared by the management of Wuxi DiCo Electronic Materials Co., Ltd. (hereinafter referred to as "DiCo Co., Ltd.").
I. Responsibilities of Management and the Board of Directors
In accordance with the "Administrative Measures for Major Asset Restructuring of Listed Companies" and the "Guidelines for Self-Regulation of Listed Companies on the Shenzhen Stock Exchange No. 2 - Standardized Operation of GEM Companies," it is the responsibility of DiCo Co., Ltd.'s management to prepare the performance commitment implementation status explanation, ensuring its content is true, accurate, and complete, and free from false records, misleading statements, or significant omissions.
II. Responsibilities of the Certified Public Accountant
Our responsibility is to express an audit opinion on the performance commitment implementation status explanation prepared by the management of DiCo Co., Ltd. based on our audit work.
We planned and performed our audit work in accordance with the "Chinese Certified Public Accountants' Other Assurance Services Standards No. 3101 - Assurance Services Other Than Audits or Reviews of Historical Financial Information" to obtain reasonable assurance that the performance commitment implementation status explanation is free from material misstatement. In our audit, we considered the actual situation of Jiangsu Jingkai Semiconductor Technology Co., Ltd. and performed the audit procedures we deemed necessary, including verifying accounting records. We believe that our audit work provides a reasonable basis for our audit opinion.
III. Audit Opinion
After our audit, we are of the opinion that the performance commitment implementation status explanation prepared by the management of DiCo Co., Ltd. has been prepared in accordance with the provisions of the "Administrative Measures for Major Asset Restructuring of Listed Companies" and the "Guidelines for Self-Regulation of Listed Companies on the Shenzhen Stock Exchange No. 2 - Standardized Operation of GEM Companies," and fairly reflects, in all material respects, the implementation of the relevant performance commitments of Jiangsu Jingkai Semiconductor Technology Co., Ltd. for 2025.
IV. Other Matters to be Explained
This report is only for use in DiCo Co., Ltd.'s annual report disclosure and shall not be used for any other purpose. We agree to include this report as a mandatory document in DiCo Co., Ltd.'s annual report, to be submitted and disclosed externally along with other documents.
Attachment: Explanation on the Implementation of 2025 Performance Commitments for Wuxi DiCo Electronic Materials Co., Ltd.'s Cash Purchase of Zhejiang Sote Material Technology Co., Ltd.
Beijing Xinghua Certified Public Accountants (Special General Partnership) Certified Public Accountant: [blank] Certified Public Accountant: 2 China · Beijing March 19, 2026
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Wuxi DiCo Electronic Materials Co., Ltd. Regarding Jiangsu Jingkai Semiconductor Technology Co., Ltd. 2025 Performance Commitment Implementation Status Explanation
I. Basic Situation of the Transaction