石英股份：近期已在国内一家头部存储晶圆制造企业顺利完成12英寸晶圆制造的全部工艺测试

Core Viewpoint - The company has successfully completed the full process testing of 12-inch wafers using self-produced high-purity quartz sand for semiconductor diffusion furnace tubes, achieving certification due to excellent performance [1] Group 1: Company Developments - The company has developed a series of quartz materials for semiconductor diffusion furnace tubes using self-produced high-purity quartz sand [1] - The certification was achieved with a leading domestic storage wafer manufacturing enterprise, although the specific name of the client cannot be disclosed due to commercial confidentiality [1] - The company plans to continue prioritizing the development of semiconductor materials and expand the certification scope of self-produced sand products [1]