Progress Announcement of Shenzhen Derun Electronics Co., Ltd. on Providing Guarantees for the Financing of Its Controlling Subsidiaries

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Stock code: 002055 Stock abbreviation: ST Derun Announcement No.: 2026-018

Shenzhen Derun Electronics Co., Ltd.

Progress Announcement on Providing Guarantees for Financing of a Holding Subsidiary

The Company and all members of the Board of Directors guarantee that the information disclosed in this announcement is true, accurate, and complete, and that there are no false records, misleading statements, or material omissions.

I. Overview of the Guarantee Review

Shenzhen Derun Electronics Co., Ltd. (hereinafter referred to as the “Company”) respectively deliberated and approved the “Proposal on Adjusting the Guarantee Amount for Financing of a Holding Subsidiary” at the 17th meeting of the eighth session of the Board of Directors on August 22, 2025, and at the second extraordinary general meeting of 2025 on September 9, 2025. The proposal agreed that the Company provides, for the holding subsidiary, joint-liability guarantees with a total exposure amount not exceeding the RMB equivalent of 166,400 million for comprehensive credit lines applied for by entities such as banks and other financial institutions, financial leasing companies, commercial factoring companies, etc. Among them, the guarantee amount provided for Shenzhen Derun Optical Co., Ltd. (hereinafter referred to as “Derun Optical”) is RMB 26,000 million. For details, please refer to the Company’s announcement published on August 23, 2025 in The Securities Times, Shanghai Securities News, and the website of Juchao Information Network (

II. Progress of the Guarantee

Recently, the Company and China Construction Bank Corporation Shenzhen Bao’an Sub-branch (hereinafter referred to as the “Construction Bank”) signed the “Maximum Principal Amount Guarantee Contract for the Cluster Kuaili Loan Credit Line,” under which they provide joint-liability guarantees not exceeding RMB 1,700 million for the loan applied for by the Company’s holding subsidiary Derun Optical to the Construction Bank.

Within the above guarantee amount range for this guarantee matter regarding Derun Optical, no further convening of a meeting of the Board of Directors or the shareholders’ meeting is required. After this guarantee, the Company’s guarantee balance for Derun Optical is RMB 47.00 million.

III. Specific Information on the Guaranteed Party

1. Company name: Shenzhen Derun Optical Co., Ltd.

2. Time of establishment: November 2013

3. Registered location: Building 1, Unit 1 (101, 201, 301) and Unit 2 (102, B2) and Unit 3 (101), No. 269, Huitong Road, Fenghuang Community, Fenghuang Street, Guangming District, Shenzhen

4. Registered capital: RMB 160.00 million

5. Legal representative: Yuan Yizhen

6. Scope of main business: Production and sales of photoelectric lens products, photoelectric products, LED lamp diode brackets, LED lighting fixtures, lens assemblies, automotive parts products, precision molds, precision component products (excluding restricted items), lead frame brackets and semiconductor components, precision electronic connectors, optical connectors, electronic components, and communication product accessories. Information consultation, marketing planning, and photoelectric technology support services.

7. Key financial indicators for the past one year and the latest period:

As of December 31, 2024, Derun Optical’s total assets were RMB 5,453.457 million, total liabilities were RMB 3,832.085 million, net assets were RMB 1,621.372 million, and the asset-liability ratio was 70.27%. In 2024, operating revenue was RMB 5,957.225 million, total profit was RMB -189.788 million, and net profit was RMB -181.905 million. The above financial data have been audited by an accounting firm with the qualifications to conduct securities and futures-related business, and an audit report with a standard unqualified opinion has been issued.

As of September 30, 2025, Derun Optical’s total assets were RMB 5,650.772 million, total liabilities were RMB 3,688.673 million, net assets were RMB 1,962.099 million, and the asset-liability ratio was 65.28%. From January to September 2025, operating revenue was RMB 4,403.714 million, total profit was RMB 409.883 million, and net profit was RMB 340.727 million. The above financial data have not been audited.

8. Relationship with the Company: The Company directly and indirectly holds 83.14% of its shares, and it is a holding subsidiary of the Company.

9. Upon inquiry, Derun Optical is not a dishonest party subject to enforcement.

IV. Main Contents of the Guarantee Agreement

Guarantor: Shenzhen Derun Electronics Co., Ltd.

Creditor: China Construction Bank Corporation Shenzhen Bao’an Sub-branch

1. Guarantee method: Joint-liability guarantee

2. Guarantee term: From the date of issuance of each single loan until the date three years after the deadline for performance of debts under that particular loan. If the Construction Bank and the debtor reach an extension agreement regarding the performance deadline for debts under the principal contract, the guarantee period shall be three years after the deadline for performance of the debts as re-agreed under the extension agreement. The extension does not require the guarantor’s consent, and the guarantor must still assume joint-liability guarantee responsibility.

3. Guarantee scope: The principal amount under the principal contract of up to RMB 17.00 million, and interest (including compound interest and penalty interest), liquidated damages, compensation, and the interest on debts that must be paid additionally as required by applicable effective legal documents such as judgments or mediation documents during the delayed performance period; other amounts the debtor shall pay to the Construction Bank; and all expenses incurred by the Construction Bank to realize its creditor’s rights and the guarantee rights (including but not limited to litigation fees, arbitration fees, property preservation fees, travel expenses, execution fees, appraisal fees, auction fees, notarization fees, service fees, announcement fees, attorney fees, etc.).

V. Cumulative External Guarantees and Guarantees with Overdue Payments

As of March 31, 2026, the balance of external guarantees provided by the Company and its holding subsidiaries was RMB 55,598 million. After this guarantee is provided, the balance of external guarantees provided by the Company and its holding subsidiaries will be RMB 57,298 million, accounting for 42.53% of the Company’s audited net assets of the most recent period.

Except for the above guarantee provided for a holding subsidiary and the guarantees previously provided for Meida Electrical (Chongqing) Co., Ltd. that resulted in overdue due to failure to repay the debt in a timely manner, and the resulting litigation disputes, the Company and its holding subsidiaries have not provided guarantees for shareholders, shareholders’ holding subsidiaries, shareholders’ affiliated enterprises and other related parties holding less than 50% of shares in this Company, or for any non-corporate entities or individuals, and there are no overdue guarantee matters.

VI. Documents for Reference

1. The “Maximum Principal Amount Guarantee Contract for the Cluster Kuaili Loan Credit Line” signed by the Company and the Construction Bank.

Special notice.

Board of Directors of Shenzhen Derun Electronics Co., Ltd.

April 3, 2026

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