China Nonferrous Metals Construction Co., Ltd. Announcement on the Progress of Its Subsidiary Winning the Bid for a Mineral Exploration Right

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Stock Code: 000758 Stock Abbreviation: China Nonferrous Metal Construction Group Co., Ltd. Announcement No.: 2026-014

China Nonferrous Metal Construction Group Co., Ltd.

Announcement on the Progress of Bidding for Exploration Rights by Wholly Owned Subsidiary

The Company and all members of the Board of Directors guarantee that the content of this announcement is true, accurate, and complete, with no false records, misleading statements, or major omissions.

I. Transaction Overview

On February 13, 2026, Qinghai Guotou Mining Investment Co., Ltd. (hereinafter referred to as “Guotou Mining”) publicly auctioned the exploration rights for polymetallic mineral resources in the Haryizha area of Dulan County, Qinghai Province (hereinafter referred to as “Qinghai Haryizha Exploration Rights” or “Target Mineral Rights”) through the Chongqing Public Resource Trading Center. On March 20, 2026, the Company’s wholly owned subsidiary, Qinghai China Nonferrous Mining Development Co., Ltd. (hereinafter referred to as “Qinghai China Nonferrous”), successfully bid for the Qinghai Haryizha Exploration Rights at a price of 214,438,600 RMB. On March 23, 2026, Qinghai China Nonferrous received the “Transaction Result Notification” issued by Chongqing United Property Rights Exchange Group Co., Ltd. (hereinafter referred to as “Chongqing Exchange”).

For more details on the above matters, please refer to the announcement titled “Announcement on Bidding for Exploration Rights by Wholly Owned Subsidiary” (Announcement No.: 2026-013) disclosed by the Company on March 24, 2026, in the “China Securities Journal,” “Securities Times,” “Shanghai Securities Journal,” “Securities Daily,” and the Giant Tide Information Network (www.cninfo.com.cn).

II. Transaction Progress

On March 26, 2026, Qinghai China Nonferrous and Guotou Mining signed the “Transaction Contract for the Exploration Rights Project of Polymetallic Minerals in Haryizha Area, Dulan County, Qinghai Province” (hereinafter referred to as “Contract”), with the main content as follows:

1. Parties to the Transaction

Party A: Qinghai Guotou Mining Investment Co., Ltd.

Party B: Qinghai China Nonferrous Mining Development Co., Ltd.

2. Transfer Subject and Price

(1) Transfer Subject: Exploration rights for polymetallic minerals in Haryizha area, Dulan County, Qinghai Province

(2) Transfer Price: 214,438,600 RMB

(3) Party B shall bear the value-added tax incurred from this transaction, with a VAT rate of 6%, to be paid to Party A’s designated account within 10 working days after Party A pays according to national regulations.

(4) Other taxes and fees involved in this transaction shall be borne by Party A and Party B in accordance with relevant regulations.

3. Payment Arrangement

Party B shall remit the transaction price of 194,438,600 RMB, after deducting the deposit, into the designated account of Chongqing Exchange in a lump sum within 5 working days from the effective date of the Contract. The deposit of 20,000,000 RMB paid by Party B shall be converted into part of the price and paid to the settlement account of Chongqing Exchange on the day the Contract is signed.

Within 3 working days after Chongqing Exchange has received all transaction prices and transaction service fees, 40% of the transfer price (hereinafter referred to as “Down Payment”) will be transferred to Party A’s designated account; within 3 working days after the completion of mineral rights transfer, Chongqing Exchange will pay the remaining price to the same designated account of Party A.

4. Asset Delivery Matters

Within 45 working days after Party A receives the Down Payment, both parties shall complete the transfer of the Target Mineral Rights, with the delivery standard being: the Target Mineral Rights must complete the change registration, and Party B must obtain the new “Mineral Resource Exploration License” and “Real Estate Certificate (Exploration Rights)” issued by the competent natural resources authority.

If the delivery exceeds the above time limit due to administrative procedures of the natural resources department, Party A shall not bear any liability for breach of contract but shall actively coordinate to continue performing cooperation obligations and report progress to Party B monthly, with the delivery time being correspondingly extended. If the cumulative delay due to the same administrative procedure exceeds 180 days, unless otherwise agreed by both parties, Party B may unilaterally terminate this Contract and request Party A to refund all payments made by Party B.

5. Breach of Contract Liability

If Party A fails to deliver the Target Mineral Rights to Party B on time due to Party A’s reasons, or if Party B fails to pay the transfer price on time (for delays caused by Chongqing Exchange, Party B shall not bear liability for breach of contract), the breaching party shall pay liquidated damages to the non-breaching party, calculated based on the actual number of overdue days at an interest rate equivalent to the one-year Loan Market Quote Rate on the transfer price.

If Party A conceals, omits, or makes false statements, or if the Target Mineral Rights have undisclosed potential liabilities, ownership disputes, or rights restrictions, Party B has the right to unilaterally terminate the contract or request Party A to continue performing, and Party B also has the right to demand Party A pay 20% of the total transfer price as punitive liquidated damages, and Party A shall be liable for all losses suffered by Party B as a result.

III. Risk Warning

This bidding requires the payment of transaction price, and Qinghai China Nonferrous must fulfill the approval and other procedures of relevant departments to obtain the exploration license, which still carries uncertainties. The actual resource amount, grade, geological conditions, etc., may vary from the exploration results. The Company will fulfill its information disclosure obligations in a timely manner based on progress, and investors are urged to pay attention to investment risks.

IV. Documents for Reference

1. “Transaction Contract for the Exploration Rights Project of Polymetallic Minerals in Haryizha Area, Dulan County, Qinghai Province.”

This announcement is hereby made.

Board of Directors of China Nonferrous Metal Construction Group Co., Ltd.

March 28, 2026

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