天原股份：硫磺制酸项目目前已进入设备安装制作阶段

Group 1 - The core viewpoint of the article is that Tianyuan Co., Ltd. has made progress in its sulfuric acid project, which is currently in the equipment installation phase [2] Group 2 - The company has indicated that the construction progress of the sulfuric acid project is going well [2]