德恩精工：控股子公司德恩航天的经营范围包括3D打印服务、火箭发射设备研发和制造等

Core Viewpoint - The company, through its subsidiary Deen Aerospace, is involved in the research and development of rocket launch equipment and 3D printing manufacturing [1] Group 1: Company Operations - Deen Aerospace's business scope includes general projects such as new material technology research and development, non-ferrous metal casting, additive manufacturing, 3D printing services, and sales of 3D printing basic materials [1] - The subsidiary also engages in the manufacturing of high-performance fibers and composite materials, marine supporting equipment, and processing of mechanical parts and components [1] - The company is authorized to conduct research and manufacturing of rocket launch equipment and rocket engines, subject to approval from relevant authorities [1]