首钢股份：首钢水城钢铁（集团）有限责任公司是公司控股股东首钢集团有限公司的子公司

Group 1 - The core point of the news is the successful operation of the world's first commercial supercritical carbon dioxide power generation unit, named "Super Carbon No. 1," at Shougang Water Steel [2] - Shougang Co., Ltd. confirmed its awareness of the "Super Carbon No. 1" demonstration project, which is operated by its subsidiary, Shougang Water City Steel [2]