Group 1 - The core point of the article is that Gansu Cooperation Zaozigou Gold Mine Co., Ltd., a subsidiary of Zhaojin Mining, announced a procurement project for an underground waste rock sorting machine with a budget of 5.2 million yuan [1] - The procurement announcement was made on August 26, 2025, indicating the company's ongoing investment in mining infrastructure [1] - Zhaojin Mining holds a 52% stake in Gansu Cooperation Zaozigou Gold Mine Co., Ltd., reflecting its significant involvement in the project [1]