Zheshang Securities Co., Ltd. Issuance Sponsorship Letter Regarding Jiangsu Chuanyi Technology Co., Ltd.'s 2026 Annual Issuance of A-Shares to Specific Targets

Zheshang Securities Co., Ltd.

Regarding Jiangsu Chuanyi Technology Co., Ltd.

2026 Annual Issuance of A-Shares to Specific Targets

Issuance Sponsorship Letter

Sponsor (Lead Underwriter)

(Address: No. 201 Wuxing Road, Hangzhou, Zhejiang Province)

July 2026

Statement

As the sponsor for the 2026 annual issuance of A-shares to specific targets by Jiangsu Chuanyi Technology Co., Ltd. (hereinafter referred to as "Chuanyi Technology," "the Issuer," or "the Company"), Zheshang Securities Co., Ltd. (hereinafter referred to as "the Sponsor" or "Zheshang Securities") and its designated sponsor representatives have acted in accordance with the Company Law of the People's Republic of China, the Securities Law of the People's Republic of China, the Administrative Measures for the Registration of Securities Issuance by Listed Companies, and the Applicable Opinions on Relevant Provisions of Articles 9, 10, 11, 13, 40, 57, and 60 of the Administrative Measures for the Registration of Securities Issuance by Listed Companies—Securities and Futures Legal Application Opinion No. 18, as well as other relevant laws, regulations, and the rules of the China Securities Regulatory Commission (CSRC) and the Shenzhen Stock Exchange (SZSE). We have acted with honesty, trustworthiness, and due diligence, and have issued this sponsorship letter in strict accordance with legally formulated business rules, industry practice standards, and ethical codes, ensuring the authenticity, accuracy, and completeness of the documents provided.

Unless otherwise specified, the abbreviations used in this sponsorship letter have the same meanings as those in the prospectus.

Table of Contents

1. Statement

2. Table of Contents

3. Section 1: Basic Information on the Securities Issuance

4. Section 2: Sponsor's Commitments

5. Section 3: Verification Matters Required by the Opinions on Strengthening the Prevention of Integrity Risks in the Employment of Third Parties by Securities Companies in Investment Banking Business

6. Section 4: Recommendation Opinion on the Securities Issuance

7. Section 5: Compliance of the Securities Issuance with Laws and Regulations

8. Section 6: Major Risks Faced by the Issuer

9. Section 7: Sponsor's Evaluation of the Issuer's Development Prospects

10. Section 8: Sponsor's Recommendation Conclusion

Section 1: Basic Information on the Securities Issuance

1. Sponsor of the Securities Issuance

2. Information on the Sponsor's Personnel for the Securities Issuance

(1) Names and Professional Qualifications of Sponsor Representatives Responsible for the Issuance

1. Zhou Linzi: Senior Manager at Zheshang Securities Co., Ltd., Master of Financial Management, holding qualifications as a sponsor representative, Chinese Certified Public Accountant, and legal professional. Since 2017, he has been engaged in investment banking, participating in projects including the IPO of Taotao Vehicle Industry (301345) and the issuance of convertible corporate bonds to unspecified targets by Huichuangda (300909).

2. Jiang Zhou: Executive Director at Zheshang Securities Co., Ltd., Master of Finance, sponsor representative, CFA. Since 2012, he has been engaged in investment banking, having led or participated in projects including the IPOs of Weili Medical (603309), Huawang Shares (603007), Zhongyuan Securities (601375), Weisi Medical (688580), the private placement of shares for Sanbian Technology (002112), the issuance of convertible corporate bonds to unspecified targets by Huichuangda (300909), and public issuances of convertible bonds for Huawang Shares (603007) and Changxin Technology (300088), as well as private placements for Guangdong Mingzhu (600382) and the 2013 SME private placement bond for Huawang Shares (603007).

(2) Project Coordinator and Other Team Members

1. Project Coordinator

The project coordinator for this securities issuance is Su Youjie. His professional background is as follows:

Manager Assistant at Zheshang Securities Co., Ltd., Master of Finance. Since 2023, he has been engaged in investment banking, participating in projects including the private placement of shares for Sanbian Technology (002112), the issuance of convertible corporate bonds to unspecified targets by Huichuangda (300909), and the issuance of shares for asset acquisition and supporting financing for Yingtang Intelligent Control (300131).