中国巨石：控股股东拟1.25亿元—2.5亿元增持公司股份

Group 1 - The core point of the article is that China National Building Material Co., Ltd. plans to increase its stake in China Jushi Co., Ltd. through centralized bidding, with a total investment amount between 125 million yuan and 250 million yuan [1] Group 2 - China National Building Material Co., Ltd. currently holds a 29.22% stake in China Jushi Co., Ltd. [1] - The share buyback will be implemented gradually at an opportune time [1]