Shengton Mining Group Co., Ltd.

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(8) The relationship between the guarantor and the company: The guarantor, Shengtun Metals, is a wholly owned subsidiary of Shengtun Mining (rights protection).

3. Shengtun New Energy

(1) Company Name: Shengtun New Energy Materials (Guizhou) Co., Ltd.

(2) Date of Establishment: May 16, 2022

(3) Registered Address: Shuanglong Industrial Park, Niuchang Town, Fuquan City, Guizhou Province

(4) Legal Representative: Long Shuang

(5) Registered Capital: RMB 628.932614 million

(6) Business Scope: Prohibited activities as per laws, regulations, and State Council decisions; activities requiring approval (licensing) after approval by authorities; activities not requiring approval are自主经营. (Commonly engaged in nonferrous metal smelting; precious metal smelting; rare earth metal smelting; alloy manufacturing; specialized chemical products manufacturing (excluding hazardous chemicals); recycling and secondary utilization of waste power batteries from new energy vehicles (excluding hazardous waste) (projects requiring approval shall be operated after approval by relevant departments)).

(7) Shengtun New Energy’s recent financial indicators for the past year and a period are as follows:

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(8) The relationship between the guarantor and the company: The guarantor, Shengtun New Energy, is a controlling subsidiary of Shengtun Mining.

4. KMSA

(1) Company Name: KALONGWE MINING SA

(2) Date of Establishment: January 27, 2014

(3) Registered Address: No. 113, 6th Avenue, Manika Community, Kolwezi, Lualaba Province, Democratic Republic of the Congo

(4) Legal Representative: Dong Bo

(5) Registered Capital: USD 200,000

(6) Business Scope: Conduct mineral research, exploration, prospecting, mining, and extraction in the Democratic Republic of the Congo and abroad in its own name or on behalf of third parties; refining, metallurgical processing, chemical processing, sales, and export of such minerals or their derivatives.

(7) KMSA’s recent financial indicators for the past year and a period are as follows:

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(8) The relationship between the guarantor and the company: The guarantor, KMSA, is a controlling subsidiary of Shengtun Mining.

5. Shengtun Shanghai Industrial

(1) Company Name: Shengtun (Shanghai) Industrial Co., Ltd.

(2) Date of Establishment: February 2, 2015

(3) Registered Address: Room F1079, Building 1, No. 151 Chuan Sha Road, Pudong New Area, Shanghai

(4) Legal Representative: Weng Xiong

(5) Registered Capital: RMB 168 million

(6) Business Scope: Import and export of goods, technology import and export. (Projects requiring approval shall be operated after approval by relevant departments; specific projects are subject to approval documents or permits.) General items include: sales of petroleum products (excluding special approval), chemical raw materials and products (excluding hazardous chemicals, monitored chemicals, civil explosives, precursor chemicals), rubber and plastic products, environmental protection materials, electrical equipment, metal materials, machinery and electromechanical equipment, textiles, wood, steel, building materials, mineral products (excluding controlled items), metal products; enterprise management services, investment management, investment consulting (excluding brokerage), asset management, industrial investment, financial information services (excluding financial business), financial information technology outsourcing entrusted by financial institutions, financial process outsourcing, organization of cultural and artistic exchange activities, landscaping construction, technical services, development, consulting, transfer, promotion. (Activities not requiring approval are conducted lawfully with business license.)

(7) Shengtun Shanghai Industrial’s recent financial indicators for the past year and a period are as follows:

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(8) The relationship between the guarantor and the company: The guarantor, Shengtun Shanghai Industrial, is a wholly owned subsidiary of Shengtun Mining.

6. Hongsheng International

(1) Company Name: Hongsheng International Resources Co., Ltd.

(2) Date of Establishment: May 2, 2018

(3) Registered Address: No. 3512, 35th Floor, The Center, No. 99 Queen’s Road, Central, Hong Kong

(4) Directors: Luo Weiqi, Yao Chengye, He Maocai

(5) Registered Capital: USD 50 million

(6) Business Scope: International trade and investment

(7) Hongsheng International’s recent financial indicators for the past year and a period are as follows:

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(8) The relationship between the guarantor and the company: The guarantor, Hongsheng International, is a wholly owned subsidiary of Shengtun Mining.

7. Hanyuan Shengtun Zinc and Germanium

(1) Company Name: Hanyuan Shengtun Zinc and Germanium Technology Co., Ltd.

(2) Date of Establishment: July 28, 2011

(3) Registered Address: Wànli Industrial Park, Hanyuan County, Sichuan Province

(4) Legal Representative: Zhu Yongxiang

(5) Registered Capital: RMB 1.3 billion

(6) Business Scope: R&D, promotion, and application of lead-zinc technology; purchase and sale of mineral products; smelting, deep processing, and sales of zinc-germanium series products; R&D, production, and sales of new energy materials and electronic materials; smelting and sales of nonferrous and precious metals; comprehensive recovery, processing, and sales of zinc-germanium raw materials, associated metals, and waste slag; processing and sales of zinc roasted ore; production and sales of sulfuric acid; sales of building materials and chemical products (excluding hazardous chemicals); road transportation. (Projects requiring approval shall be operated after approval by relevant departments).

(7) Hanyuan Shengtun Zinc and Germanium’s recent financial indicators for the past year and a period are as follows:

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(8) The relationship between the guarantor and the company: The guarantor, Hanyuan Shengtun Zinc and Germanium, is a wholly owned subsidiary of Shengtun Mining.

(3) Main contents of the guarantee agreement

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(4) Necessity and reasonableness of the guarantee

Shengtun Zinc-Germanium, Shengtun Metals, Shengtun New Energy, KMSA, Shengtun Shanghai Industrial, Hongsheng International, and Hanyuan Shengtun Zinc-Germanium are subsidiaries of the company. The above guarantees are based on the development and funding needs of these subsidiaries and are authorized by the board of directors and shareholders’ meeting as reasonable business activities. Shengtun New Energy is a controlled subsidiary included in the consolidated financial statements; the company has control over its operations and finances, effectively managing guarantee risks. Other shareholders did not provide proportional guarantees. These guarantees will not adversely affect the company’s assets or normal operations, nor harm the interests of the company and shareholders, especially minority shareholders.

II. Total external guarantees and overdue guarantees

As of the disclosure date, the total balance of external guarantees by the listed company and its controlling subsidiaries is RMB 9,328.2452 million, accounting for 56.50% of the latest audited net assets. Guarantees provided to associated companies total RMB 172.04 million; guarantees to controlling subsidiaries total RMB 9,156.2052 million, accounting for 55.56% of the latest audited net assets. All external guarantees are not overdue.

This announcement is hereby made.

Board of Directors of Shengtun Mining Group Co., Ltd.

March 20, 2026

Stock Code: 600711 Stock Abbreviation: Shengtun Mining Announcement No.: 2026-012

Shengtun Mining Group Co., Ltd.

Announcement on Authorization of Management to Purchase Low-Risk Financial Products

The company’s board and all directors guarantee that this announcement contains no false records, misleading statements, or major omissions, and bear legal responsibility for its truthfulness, accuracy, and completeness.

On March 18, 2026, the 26th meeting of the 11th Board of Directors approved the proposal on authorizing management to purchase low-risk financial products from financial institutions.

Details are as follows:

1. Investment Overview

(1) Purpose of Investment

To improve capital efficiency, reduce idle funds, and on the basis of ensuring liquidity and safety, plan to use surplus idle funds generated during operations to purchase safe, highly liquid short-term low-risk financial products from financial institutions.

(2) Investment Limit

The total limit for the company and its controlling subsidiaries’ use of idle funds to purchase low-risk financial products is RMB 1 billion at any time; within this limit, the total amount purchased over 12 consecutive months shall not exceed 50% of the latest audited net assets of the listed company.

(3) Investment Method

The board authorizes the CFO to purchase low-risk financial products from financial institutions, with a term not exceeding 1 year.

(4) Authorization Period

Valid for one year from the date of approval by the 26th meeting of the 11th Board.

2. Funding Source

Funds used for purchasing low-risk financial products are limited to idle, legitimate, and compliant own funds.

3. Approval Procedures

The proposal was approved at the same meeting on March 18, 2026.

4. Impact on the Company

Using idle funds to purchase safe, highly liquid low-risk financial products will pose minimal risk, improve capital utilization, increase investment returns, and benefit shareholders. It will not affect the company’s main business development. If there is a need for funds in operations, the investments will be promptly recovered, ensuring no impact on further development.

5. Risk Control Measures

Low-risk financial products from financial institutions are low-risk investments, but market fluctuations due to macroeconomic factors are possible. The company will strictly follow relevant laws, regulations, the Articles of Association, and internal rules for purchasing such products. The finance department manages these purchases. The company will prioritize risk prevention, conduct strict review, cautious decision-making, closely monitor fund operations, strengthen risk control and supervision, and ensure the safety of investment funds.

This announcement is hereby made.

Board of Directors of Shengtun Mining Group Co., Ltd.

March 20, 2026

Stock Code: 600711 Stock Abbreviation: Shengtun Mining Announcement No.: 2026-021

Shengtun Mining Group Co., Ltd.

Announcement on Changes in Accounting Policies

The company’s board and all directors guarantee that this announcement contains no false records, misleading statements, or major omissions, and bear legal responsibility for its truthfulness, accuracy, and completeness.

Key points: ●

● ● This change in accounting policy is based on the latest accounting standards revised and issued by the Ministry of Finance of the People’s Republic of China (hereinafter “Ministry of Finance”). It does not have a significant impact on the company’s financial position, operating results, or cash flows.

1. Overview of the Change in Accounting Policy

On December 5, 2025, the Ministry of Finance issued the “Notice on Issuance of <Interpretation No. 19 of Enterprise Accounting Standards>” (Cai Kuai [2025] No. 32), which stipulates new standards including “Accounting treatment of non-controlling interests in business combinations under common control,” “Accounting treatment of capital reserve related to business combinations under common control,” “Termination of recognition of financial liabilities settled via electronic payment systems,” “Assessment and disclosure of cash flow characteristics of financial asset contracts,” and “Disclosure of equity instruments designated at fair value with changes recognized in other comprehensive income,” effective from January 1, 2026. This change is a legal compliance update and does not require approval from the board or shareholders.

2. Specifics of the Policy Change

(1) Previous accounting policy: The company previously followed the “Basic Standard for Enterprise Accounting” issued by the Ministry of Finance, along with specific standards, application guidelines, interpretations, and other relevant regulations.

(2) New accounting policy: After the change, the company will implement Interpretation No. 19 issued by the Ministry of Finance. Other unchanged parts will continue to follow the previous standards, guidelines, and interpretations.

(3) Effective date: The company will implement the new standards starting from the date specified in Interpretation No. 19.

3. Impact of the Change

This change is a compliance update based on the Ministry of Finance’s regulations. It does not affect the comparability of the company’s financial statements for prior periods. It will not have a significant impact on the company’s financial position, operating results, or cash flows. No retrospective adjustments are required, and there is no harm to the interests of the company or shareholders.

This announcement is hereby made.

Shengtun Mining Group Co., Ltd. Board of Directors

March 20, 2026