CSC Financial Co., Ltd.
Regarding
Longsys Electronics Co., Ltd.
Issuance of Shares to Specific Targets
Listing Sponsorship Letter
Sponsor
August 2026
Declaration by Sponsor and Sponsor Representatives
CSC Financial Co., Ltd. and the project's sponsor representatives, Peng Huan and Yu Peng, 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 established 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
Definitions 3
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Basic Information of the Issuer 5
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Details of the Issuer's Current Issuance 15
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Information on Sponsor Representatives, Coordinators, Other Project Team Members, Contact Addresses, Telephone Numbers, and Other Communication Methods for this Securities Issuance and Listing 18
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Explanation on Whether the Sponsor Has Any Circumstances That May Affect the Impartial Performance of Sponsorship Duties 20
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Matters That the Sponsor Shall Commit to in Accordance with Relevant Regulations 21
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Explanation on Whether the Issuer Has Performed the Decision-Making Procedures Stipulated by the Company Law, the Securities Law, and the China Securities Regulatory Commission and Shenzhen Stock Exchange for this Securities Issuance and Listing 22
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Professional Judgment Made by the Sponsor on Whether the Issuer Meets the Sector Positioning and National Industrial Policies, Corresponding Reasons and Basis, and the Sponsor's Verification Content and Process 22
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Work Arrangements During the Continuous Supervision Period 23
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Sponsor's Recommendation Conclusion on this Project 25
Definitions
In this listing sponsorship letter, unless otherwise specified, the following terms have the following specific meanings: