Listing Sponsorship Letter for Chongqing Shunbo Aluminium Alloy Co., Ltd. Regarding Issuance of Shares to Specific Targets

Sealand Securities Co., Ltd.

Regarding Chongqing Shunbo Aluminium Alloy Co., Ltd.

Listing Sponsorship Letter for Issuance of Shares to Specific Targets

Sponsor (Lead Underwriter)

(Registered Address: No. 13 Fuxing Road, Guilin, Guangxi Zhuang Autonomous Region)

Declaration

Sealand Securities Co., Ltd. and the project's sponsor representatives, Luo Dawei and Ye Hongjiang, 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, and other relevant laws, regulations, and the rules of the China Securities Regulatory Commission and the Shenzhen Stock Exchange. We have acted with honesty, integrity, and due diligence, strictly following the legally formulated business rules and industry self-regulatory standards to issue this listing sponsorship letter, and we guarantee that the documents provided are true, accurate, and complete.

Table of Contents

1. Declaration

2. Table of Contents

3. Definitions

4. Section I: Basic Information of the Issuer

• I. Overview of the Issuer

• II. Main Business of the Issuer

• III. Key Operating and Financial Data and Indicators

• IV. Major Risks Faced by the Issuer

1. Section II: Basic Information of the Issuance

• I. Type and Par Value of Shares

• II. Issuance Method and Timing

• III. Target Subscribers and Subscription Method

• IV. Pricing Benchmark Date, Pricing Principles, and Issuance Price

• V. Issuance Quantity

• VI. Lock-up Period

• VII. Amount and Use of Proceeds

• VIII. Arrangement for Accumulated Profits Prior to Issuance

• IX. Listing Venue

• X. Validity Period of Resolutions

1. Section III: Information and Commitments of the Sponsor

• I. Information on Sponsor Representatives, Assistants, and Other Project Team Members

• II. Verification of Affiliation between the Sponsor and the Issuer

• III. Commitments of the Sponsor

1. Section IV: Sponsor's Conclusion on the Securities Issuance and Listing

• I. Necessary Decision-making Procedures Performed for the Issuance

• II. Sponsor's Verification on Whether the Issuance Complies with Sector Positioning and National Industrial Policies

• III. Sponsor's Arrangements for Continuous Supervision of the Issuer

• IV. Contact Information for the Sponsor and Sponsor Representatives

• V. Other Matters the Sponsor Deems Necessary to Explain

• VI. Sponsor's Recommendation Conclusion for the Securities Issuance and Listing

Definitions

In this listing sponsorship letter, unless the context otherwise requires, the following abbreviations and terms have the following meanings: