石英股份：在高纯石英砂业务方面，公司合成石英砂研发进展顺利

Core Viewpoint - The company has successfully passed certifications for its self-produced high-purity quartz sand used in semiconductor diffusion and etching applications, and has secured a certain volume of orders from significant domestic and international clients [1] Group 1 - The company has confirmed that its high-purity quartz sand products have been certified by important domestic and international customers [1] - There is a certain volume of orders that have been secured for the high-purity quartz sand products [1] Group 2 - The company is making steady progress in the research and development of synthetic quartz sand, which is currently in the pilot testing phase [1]