Sponsorship Letter for Zhejiang Tailin Bioengineering Co., Ltd.'s Public Offering of Convertible Bonds

Sponsorship Letter

Changcheng Securities Co., Ltd. (hereinafter referred to as "the Sponsor" or "Changcheng Securities") accepts the entrustment of Zhejiang Tailin Bioengineering Co., Ltd. (hereinafter referred to as "Tailin Bioengineering," "the Company," or "the Issuer") to act as its sponsor for the public issuance of convertible bonds to unspecified investors. The Sponsor and the sponsoring representatives, 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 Registration of Securities Issuance by Listed Companies, the Shenzhen Stock Exchange GEM Listing Rules, and other relevant laws, administrative regulations, and the regulations of the China Securities Regulatory Commission and the Shenzhen Stock Exchange, have issued this sponsorship letter with honesty, diligence, and responsibility, ensuring that the documents provided are true, accurate, and complete. Unless otherwise specified in this letter, the definitions of terms used herein are consistent with those in the "Prospectus for the Public Issuance of Convertible Bonds by Zhejiang Tailin Bioengineering Co., Ltd. to Unspecified Investors."

Table of Contents

1. Statement .................................................................................................................. 2
2. Table of Contents ...................................................................................................... 3
3. Basic Information of the Issuer ................................................................................. 4
   1. Basic Information of the Issuer ........................................................................... 4
   2. Main Financial Data and Indicators of the Issuer ............................................... 5
   3. Major Risks Faced by the Issuer ......................................................................... 7
4. Securities Issuance Details ..................................................................................... 17
   1. Basic Information on this Issuance ................................................................... 17
   2. Sponsoring Representatives, Project Coordinators, and Other Members ............ 28
   3. Relationship Between the Sponsor and the Issuer .............................................. 29
5. Commitments of the Sponsor .................................................................................. 31
6. Sponsor's Judgment on the Issuer's Compliance with Sector Positioning and National Industrial Policies .......................................................... 33
7. Sponsorship Situation for this Securities Issuance .................................................. 35
   1. Decision-Making Procedures for this Securities Issuance .................................. 35
   2. Compliance with Securities Issuance Conditions ............................................... 35