Sichuan Hongda Corporation's supplementary announcement on its participation in the investment and development progress of Duolong Mining.

Sichuan Hongda Co., Ltd. has released a supplementary announcement on the phase investment and related party transactions with its equity participation company Tibet Hongda Duolong Mining. This joint investment with the affiliated party Hongda Group is in compliance with the previous agreement, and the equity structure of Duolong Mining remains unchanged. Established in 2014, Duolong Mining's current equity structure is 40% owned by Hongda Group, 30% owned by Hongda Co., Ltd., and 30% owned by Shengyuan Mining. Duolong Mining holds two mining rights, with the Duolong Copper Mine designed to produce approximately 300,000 tons of copper annually. Currently, Duolong Copper Mine is progressing with the application for exploration and transformation to mining, with various preliminary works progressing steadily. Duolong Western Copper Mine will increase exploration investment by 2025 and strive to complete the detailed exploration report preparation and review by the end of the year. Hongda Co., Ltd. and Hongda Group will invest in batches according to the progress.