航天工程：公司主营业务不涉及商业航天

Group 1 - The company, Aerospace Engineering (603698.SH), announced a stock price fluctuation and clarified that its main business focuses on coal gasification technology, specifically utilizing pressurized gasification technology [1] - The company is engaged in research and development, engineering design, technical services, equipment supply, and general contracting related to gasification technology and key equipment [1] - The company does not involve itself in commercial aerospace activities [1]