国机通用：公司主要从事流体机械相关业务

Group 1 - The company, Guojitongyong (600444), primarily engages in fluid machinery-related businesses, including product research and development, manufacturing, technical services and consulting, engineering design, and complete sets of services [1] - In the hydrogen energy sector, the company's research projects are mainly led by its controlling shareholder, Hefei General Machinery Research Institute Co., Ltd. [1]