China Daye Non-Ferrous Metals Mining Limited issued a formal notice dated 29 April 2026 confirming that the English and Chinese versions of its 2025 Annual Report are now available on both the company website (www.hk661.com) and the Hong Kong Stock Exchange website (www.hkexnews.hk).

The board, chaired by Xiao Shuxin, strongly recommends shareholders access the electronic version to enhance efficiency and reduce printing costs.

Key operational details outlined in the notice include:

• Distribution method: Non-registered holders will receive an email or postal notice of each future corporate communication only if their designated bank, broker, custodian, nominee or HKSCC Nominees Limited has provided the shareholder’s functional email or mailing address to the company.

• Printed copy request: Shareholders who are unable to access the online documents may obtain printed copies of the 2025 Annual Report and all subsequent corporate communications free of charge by completing the enclosed Request Form and submitting it to the Hong Kong branch share registrar, Tricor Investor Services Limited, at 17/F, Far East Finance Centre, 16 Harcourt Road, Hong Kong. Requests can also be submitted by email to 661-ecom@vistra.com.

• Validity period: The chosen communication method will remain in effect for all future corporate communications until written notice of change is received by the registrar or until 31 December 2026, whichever occurs first.

• Support channels: Enquiries can be directed to Tricor Investor Services Limited via telephone hotline at (852) 2980 1333 between 9:00 a.m. and 6:00 p.m., Monday to Friday (excluding public holidays).

The company reiterates its commitment to promoting electronic dissemination of information in line with market best practices and regulatory requirements.