Core Viewpoint - Donghua Testing is deeply involved in China's aerospace industry, providing critical mechanical testing support and systematic technical services for major national aerospace projects, including the Long March series of launch vehicles and various space missions [1] Group 1 - The company has been a long-term participant in China's aerospace sector [1] - Donghua Testing supports significant national aerospace projects such as the Beidou navigation system, Tiangong space station, Wen Tian experimental module, Chang'e lunar exploration, Shenzhou crewed spacecraft, and the subsequent Dream Chaser missions [1]