Industrial Securities Co., Ltd.
Regarding
Wuxi DK Electronic Materials Co., Ltd.
2026 Issuance of Shares to Specific Targets
Issuance Sponsorship Letter (Revised Draft)
Sponsor (Lead Underwriter)
August 2026
Table of Contents
- Basic Information on this Securities Issuance
1.1. Sponsor Representatives Responsible for this Issuance
1.2. Project Coordinator and Other Project Team Members
1.3. Basic Information of the Issuer
1.4. Type of Securities Issuance
1.5. Equity Structure Before and After Issuance
1.6. Top Ten Shareholders
1.7. Table of Historical Fundraising, Cash Dividends, and Net Asset Changes
1.8. Key Financial Data and Indicators
1.9. Explanation of Affiliation Between Sponsor and Issuer
1.10. Internal Review Procedures and Opinions of the Sponsor
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Sponsor Commitments
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Recommendation Opinions on this Securities Issuance
3.1. Sponsor's Conclusion on the Issuer's Securities Issuance
3.2. Explanation of Decision-Making Procedures in Compliance with Company Law, Securities Law, and CSRC/Exchange Regulations
3.3. Compliance with Relevant Provisions on Issuance to Specific Targets under Company Law and Securities Law
3.4. Compliance with Issuance Conditions under the Administrative Measures for Securities Issuance and Registration of Listed Companies
3.5. Compliance with Provisions of Articles 9, 10, 11, 13, 40, 57, and 60 of the Administrative Measures and Opinion No. 18 on the Application of Securities and Futures Laws
3.6. Verification Opinions on the Reasonableness of Dilution of Immediate Returns, Remedial Measures, and Commitments of Relevant Entities
3.7. Verification Opinions on Strengthening Integrity Risk Prevention in Investment Banking Business
Declaration
Industrial Securities Co., Ltd. has been engaged by Wuxi DK Electronic Materials Co., Ltd. to act as the sponsor for its issuance of shares to specific targets. Huang Rongcan and Wang Yiren are the sponsor representatives responsible for this recommendation, and this issuance sponsorship letter is issued accordingly.
The sponsor and its representatives have acted in accordance with the Company Law, the Securities Law, and other relevant laws, regulations, and CSRC and exchange rules. We have acted with honesty, trustworthiness, and due diligence, and have strictly followed established business rules, industry practice standards, and ethical codes to issue this sponsorship letter, ensuring the truthfulness, accuracy, and completeness of the documents provided.
Unless otherwise specified, all abbreviations and definitions in this sponsorship letter are consistent with the "Wuxi DK Electronic Materials Co., Ltd. 2026 Prospectus for the Issuance of Shares to Specific Targets."
Section 1 Basic Information on this Securities Issuance
- Sponsor Representatives Responsible for this Issuance
The sponsor representatives responsible for this recommendation are Huang Rongcan and Wang Yiren. Their professional qualifications are as follows:
Mr. Huang Rongcan, currently Business Director of the Emerging Industries Department of the Investment Banking Division at Industrial Securities, sponsor representative, and Certified Public Accountant. He has over 10 years of experience in investment banking, having led or participated in multiple IPO and major asset restructuring projects.
Ms. Wang Yiren, currently Managing Director of the Investment Banking Division and Head of the Emerging Industries Department at Industrial Securities, sponsor representative, and lawyer. She has over 17 years of experience in investment banking, having presided over or participated in multiple IPO and refinancing projects.
- Project Coordinator and Other Project Team Members
(1) Project Coordinator and Professional Qualifications
The project coordinator for this issuance is Mr. Zhou Hang. His professional qualifications are as follows:
Mr. Zhou Hang, currently Senior Manager of the Emerging Industries Department of the Investment Banking Division at Industrial Securities and Chinese Certified Public Accountant. He has over 5 years of experience in investment banking, having participated in multiple IPO and refinancing projects.
(2) Other Project Team Members
Other members of the project team include Geng Xingyue, Zheng Zekai, Mao Zhenxin, Li Zhenjing, Feng Xuan, Xiao Kexin, and Zeng Lingcheng.