航天动力：公司目前主要业务是泵及泵系统、液力传动系统等的研发、生产、销售

Group 1 - The company, Aerospace Power, primarily focuses on the research, development, production, and sales of pumps and pump systems, as well as hydraulic transmission systems [1] - The company's business is mainly involved in industries such as energy, chemicals, water conservancy, and transportation, with applications primarily in the civilian sector [1]