Zheshang Securities Co., Ltd. Issuance Sponsorship Letter Regarding Shenzhen Huidong Technology Co., Ltd.'s Issuance of Convertible Corporate Bonds to Unspecified Qualified Investors

Declaration

As the sponsor for Shenzhen Huidong Technology Co., Ltd. (hereinafter referred to as "Huidong," "Issuer," or "Company") regarding its issuance of convertible corporate bonds to unspecified qualified investors, Zheshang Securities Co., Ltd. (hereinafter referred to as "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 Issuance and Registration of Securities by Listed Companies, and the Applicable Opinions on the Provisions of Articles 9, 10, 11, 13, 40, 57, and 60 of the Administrative Measures for the Issuance and Registration of Securities 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, integrity, and due diligence, strictly following established business rules, industry practice standards, and ethical codes to issue this sponsorship letter, and we guarantee the truthfulness, 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. Declaration 1

2. Table of Contents 2

3. I. Basic Information on the Securities Issuance 3

4. II. Sponsor's Commitments 6

5. III. Verification Matters Required by the "Opinion on Strengthening the Prevention and Control of Integrity Risks in the Engagement of Third Parties by Securities Companies in Investment Banking Business" 7

6. IV. Sponsor's Recommendation Opinion on the Issuer's Securities Issuance 7

7. V. Compliance of the Securities Issuance with Legal and Regulatory Conditions 8

8. VI. Major Risks Faced by the Issuer 18

9. VII. Sponsor's Evaluation of the Issuer's Development Prospects 30

10. VIII. Sponsor's Recommendation Conclusion on the Securities Issuance 30

I. Basic Information on the Securities Issuance

(I) Sponsor's Designated Sponsor Representatives and Professional Qualifications

1. Jiang Zhou: Executive Director of Zheshang Securities Co., Ltd., Master of Finance, Sponsor Representative, CFA. He has been engaged in investment banking since 2012 and has presided over or participated in projects including the IPOs of Weili Medical (603309), Huawang Shares (603007), Zhongyuan Securities (601375), Weisi Medical (688580), the issuance of shares to specific targets by Sanbian Technology (002112), the public issuance of convertible bonds by Huawang Shares (603007) and Changxin Technology (300088), the non-public issuance of shares by Guangdong Mingzhu (600382), and the 2013 SME private placement bond for Huawang Shares (603007).

2. Shen Lin: Business Director of Zheshang Securities Co., Ltd., Bachelor of Science, Sponsor Representative, Certified Public Accountant. She has been engaged in investment banking since 2011 and has presided over or participated in equity financing projects such as the IPO of Faben Information (300925), the issuance of shares to specific targets by Sanbian Technology (002112), the non-public issuance of shares by Huatie Shares (000976), and the restructuring and guidance of multiple enterprises.

(II) Project Coordinator and Other Project Team Members

1. Project Coordinator

The coordinator for this securities issuance project is Wang Hao (resigned).

1. Other Project Team Members

Other members of the project team include: Zhou Linzi, Wang Yongheng (resigned), Shi Jinshan, Su Youjie, Zhang Yuqing, Liu Yuchan, and Shen Jiaxin.

(III) Basic Information of the Issuer