石英股份：公司主要从事高纯石英砂等材料的研发、生产与销售

Core Viewpoint - The company, Quartz Co., focuses on the research, production, and sales of high-purity quartz sand, high-purity quartz tubes (rods, plates, ingots, and cylinders), quartz crucibles, and other quartz materials, primarily serving the semiconductor, photovoltaic, optical fiber, and optoelectronic industries [2]. Group 1 - The company is involved in the development and production of high-purity quartz materials [2]. - The products are mainly applied in various high-tech fields such as semiconductors and photovoltaics [2]. - The management plans to evaluate future business strategies in the commercial aerospace sector based on market demand, technical feasibility, investment returns, and overall strategic layout [2].