Shengang Securities Co., Ltd. Issuance Sponsorship Letter for Liansheng Technology Co., Ltd.'s 2025 Annual Issuance of A-Shares to Specific Targets and Listing on the ChiNext Market

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Shengang Securities Co., Ltd.

Regarding

Liansheng Technology Co., Ltd.

2025 Annual Issuance of A-Shares to Specific Targets and Listing on the ChiNext Market

Issuance Sponsorship Letter

Sponsor (Lead Underwriter)

(16/22/23 Floor, Changtai International Finance Building, No. 1589 Century Avenue, China (Shanghai) Pilot Free Trade Zone)

June 2026

Statement

Shengang Securities Co., Ltd. (hereinafter referred to as "Shengang Securities" or "this Sponsor") has been engaged by Liansheng Technology Co., Ltd. (hereinafter referred to as the "Issuer," "Company," or "Liansheng Technology") to act as the sponsor for its 2025 annual issuance of A-shares to specific targets (hereinafter referred to as the "Issuance" or "this Issuance to Specific Targets"). This Sponsor and its designated 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 Sponsorship of Securities Issuance and Listing, the Administrative Measures for the Issuance and Registration of Securities by Listed Companies, and other relevant laws, administrative regulations, and provisions of the China Securities Regulatory Commission and the Shenzhen Stock Exchange. We have acted with honesty, integrity, and due diligence, strictly following established business rules, industry professional standards, and ethical codes to issue this Issuance Sponsorship Letter, and we guarantee the truthfulness, accuracy, and completeness of the documents provided.

Unless otherwise specified, terms used in this Issuance Sponsorship Letter have the same meanings as those defined in the "Liansheng Technology Co., Ltd. 2025 Annual Issuance of A-Shares to Specific Targets Prospectus." Any discrepancies between the sum of individual figures and the total in this Issuance Sponsorship Letter are due to rounding.

Table of Contents

Statement 2

Table of Contents 3

Definitions 4

Section I Basic Information on this Securities Issuance 5

1. Sponsor Project Personnel 5

2. Basic Information of the Issuer 6

3. Relationships and Major Business Dealings between the Sponsor and its Affiliates and the Issuer and its Affiliates 10

4. Internal Review Procedures and Opinions of the Sponsor 10

5. Verification of Paid Engagement of Third-Party Institutions and Individuals 11

Section II Sponsor Commitments 13

Section III Recommendation for this Securities Issuance 14

1. Decision-making Procedures for this Issuance Comply with the Company Law and Relevant CSRC Regulations 14

2. This Issuance Complies with Relevant Conditions Stipulated by the Company Law 14

3. This Issuance Complies with Relevant Conditions Stipulated by the Securities Law 14

4. This Issuance Complies with Relevant Conditions Stipulated by the Registration Management Measures 15

5. This Issuance Complies with Relevant Conditions Stipulated by the Legal Application Opinion No. 18 on Securities and Futures 17

6. Major Risks Faced by the Issuer 18

7. Development Prospects of the Issuer 24

8. Sponsor's Recommendation Conclusion for this Issuance 29

Definitions

In this Issuance Sponsorship Letter, unless the context otherwise requires, the following abbreviations and terms have the following meanings: