Group 1 - The core viewpoint of the article is that the subsidiary Guizhou Liyang Tianxiang is primarily engaged in the research, production, and maintenance of smoke and decontamination equipment, as well as the development, production, and sales of smoke agents and decontamination agents [2][3] - An investor inquired about the company's involvement in the aerospace sector, specifically regarding rocket and satellite business layouts [2] - The company clarified that Guizhou Liyang Tianxiang does not focus on manufacturing components for aircraft engines or gas turbines [2]