Zhejiang Hengtong Holding Co., Ltd. Announcement on the Progress of Providing Guarantees for Its Wholly-Owned Subsidiary

Stock Code: 600226 Stock Abbreviation: Hengtong Co., Ltd. Announcement No.: 2026-012

Zhejiang Hengtong Holding Co., Ltd.

Progress Announcement on Providing Guarantees for Wholly-Owned Subsidiaries

The company’s board of directors and all directors guarantee that the content of this announcement is free from any false records, misleading statements, or major omissions, and bear legal responsibility for its truthfulness, accuracy, and completeness.

Key Information Highlights:

● Guarantee Object and Basic Information

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● Total Guarantee Amount

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1. Overview of Guarantee Situation

(1) Basic Guarantee Information

To ensure the operational development funding needs of the wholly-owned subsidiary Hengtong Precision Copper Foil Technology (Deyang) Co., Ltd. (hereinafter referred to as “Hengtong Copper Foil”), Zhejiang Hengtong Holding Co., Ltd. (hereinafter referred to as “the Company”) recently signed the “Maximum Guarantee Contract” (No.: D340121260313999) with Jin Niu Branch of Chengdu Bank Co., Ltd. (hereinafter referred to as “Chengdu Bank Jin Niu Branch”), providing joint liability guarantee for Hengtong Copper Foil’s application for a working capital loan of 100 million yuan from Chengdu Bank Jin Niu Branch. The above guarantee does not involve counter-guarantees.

(2) Internal Decision-Making Procedures

The 27th meeting of the 9th Board of Directors and the 4th extraordinary general meeting of 2025 approved the “Proposal on the Estimated Guarantee Limit for 2026,” agreeing that the company and its controlling subsidiaries may provide guarantees not exceeding RMB 1.5 billion for the wholly-owned subsidiary Hengtong Copper Foil, and authorized the chairman of the company or its authorized representatives to handle specific signing matters within the guarantee limit. Details are available in the company’s announcements on December 13, 2025, and December 30, 2025, on the Shanghai Stock Exchange website (www.sse.com.cn): “Announcement on the Estimated Guarantee Limit for 2026” (No.: 2025-062) and “Announcement of the 4th Extraordinary General Meeting of 2025” (No.: 2025-072).

This guarantee is within the approved guarantee limit by the shareholders’ meeting, and no further board or shareholders’ approval is required.

2. Basic Information of the Guarantor

(1) Basic Information

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Note: The total in the above table may differ slightly from the sum of individual items due to rounding.

3. Main Content of the Guarantee Agreement

The “Maximum Guarantee Contract” (No.: D340121260313999) mainly includes:

Creditor: Jin Niu Branch of Chengdu Bank Co., Ltd.

Guarantor (Debtor): Hengtong Precision Copper Foil Technology (Deyang) Co., Ltd.

Guarantor: Zhejiang Hengtong Holding Co., Ltd.

Guarantee Method: Joint liability guarantee

Guarantee Amount: The maximum principal amount of the guaranteed main debt is RMB 100 million

Guarantee Period: From the date the debtor’s obligations under the specific business contract are due for performance, for three years. If the debt is paid in installments under the contract, the guarantee period for each installment is three years from the due date of that installment. If laws, regulations, or the main contract stipulate or agree that the debt matures early, the guarantee period is three years from the early maturity date. If the main contract extends the debt period, the guarantee period is three years from the extended maturity date. For transactions involving letters of credit, bank acceptance bills, guarantees, bill discounts, or commercial paper financing, the guarantee period is three years from the date of advance; for multiple advances, three years from the date of the last advance.

Scope of Guarantee: The scope of the guaranteed claims includes the outstanding balance of loans, bank acceptance bills, bill discounts, commercial paper financing, collateralized loans, letters of credit, guarantees, and/or other claims, including principal and interest (including normal interest, penalty interest, and compound interest), as well as related fees, penalties, damages, and other amounts payable by the debtor to the creditor (including but not limited to handling fees, telecommunication charges, miscellaneous fees, etc.), and all expenses incurred by Party B to realize the creditor’s rights and guarantee rights (including but not limited to litigation fees, arbitration fees, notarization fees, property preservation fees, lawyer fees, travel expenses, case investigation fees, execution fees, appraisal fees, auction fees, service fees, announcement fees, appraisal and inspection fees, surveying and mapping fees, translation fees, late fees, safekeeping fees, escrow fees, other application fees, etc.).

4. Necessity and Rationality of the Guarantee

Providing a guarantee for the wholly-owned subsidiary Hengtong Copper Foil helps meet its operational funding needs, promotes the company’s transformation and development, and is in the interest of the company and all shareholders. The guarantee amount does not exceed the company’s authorized guarantee limit. Hengtong Copper Foil operates normally, has good credit standing, and the risk of providing this guarantee is controllable, which will not adversely affect the company’s normal operations and business development.

5. Board of Directors’ Opinion

On December 11, 2025, the company held the 27th meeting of the 9th Board of Directors, which approved the “Proposal on the Estimated Guarantee Limit for 2026.” The guarantee will improve the company’s overall financing efficiency and facilitate the daily operations of relevant business segments. It aligns with the company’s overall development strategy, will not negatively impact normal operations, and does not harm the interests of the company or shareholders.

6. Total External Guarantees and Overdue Guarantees

As of the date of this announcement, the total external guarantees by the company and its controlling subsidiaries amount to RMB 796.6458 million, accounting for 23.33% of the company’s audited net assets in 2024. All guarantees are for subsidiaries under the company’s control. The company has no guarantees provided to controlling shareholders, actual controllers, or their related parties. There are no overdue guarantees.

This announcement is hereby made.

Zhejiang Hengtong Holding Co., Ltd. Board of Directors

March 17, 2026