Shandong Nanshan Aluminum Co., Ltd. Notice on the Change in Shareholder Rights of Shareholders Holding More Than 5% of Shares Reaching the 1% Threshold

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Stock code: 600219 Stock abbreviation: Nanshan Aluminum Announcement No.: 2026-013

Shandong Nanshan Aluminum Co., Ltd.

A Notice on the Prompt Disclosure of an Equity Change Reaching the 1% Threshold by a Holder of More Than 5% of Shares

Shandong Yili Electric Co., Ltd. and its concerted party Nanshan Group Co., Ltd. guarantee that the information provided to our company is true, accurate, and complete, and contains no false records, misleading statements, or material omissions.

The board of directors of our company and all directors guarantee that the content of this announcement is consistent with the information provided by the information disclosure obligor.

Key Matters:

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I. Basic Information of the Information Disclosure Obligor and Its Concerted Parties

1. Category of identity

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2. Information of the information disclosure obligor

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3. Information of the concerted party

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II. Basic Situation of the Equity Change Reaching the 1% Threshold

Shandong Nanshan Aluminum Co., Ltd. (hereinafter referred to as the “Company”) received on March 17, 2026 a notice from the concerted party of the Company’s controlling shareholder, Shandong Yili Electric Co., Ltd., stating that during the period from March 16, 2026 to March 17, 2026, it reduced its holdings of the Company’s shares by 110,385,900 shares through block trades, accounting for 0.96% of the Company’s total share capital. Its shareholding ratio decreased from 22.48% to 21.51%. This equity change has reached the 1% threshold. The relevant details are hereby announced as follows:

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III. Other Explanations

1. This equity change does not involve a tender offer, will not result in any change to the Company’s controlling shareholder or actual controller, and will not have a material impact on the Company’s corporate governance structure or continuing business operations.

2. This equity change is in compliance with the relevant laws, regulations, and normative documents, including the Securities Law of the People’s Republic of China and the Provisional Measures for the Management of Share Reductions by Shareholders of Listed Companies (2025 Revised), among others.

3. This equity change does not involve the disclosure of an equity change report.

4. The Company will continue to strictly comply with relevant requirements, promptly fulfill information disclosure obligations, and invite the attention of广大投资者 to investment risks.

This announcement is hereby made.

Shandong Nanshan Aluminum Co., Ltd.

Board of Directors

March 18, 2026

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