Tongguan Mining Construction: Plans to establish a branch in Guizhou to expand the regional market.

The company announced the establishment of the Tongguan Mining Construction branch. On August 13, 2026, the board of directors convened to review and approve the proposal to set up a branch office in Guizhou, based on development strategies and business needs, in order to further expand the mining development service market in the Guizhou region and enhance localized service capabilities and market response efficiency. The establishment of this branch does not constitute a related party transaction or a major asset reorganization.