C振石：公司主要产品为清洁能源功能材料和其他纤维增强材料，产品尚未应用于空芯光纤领域

Group 1 - The core viewpoint of the article is that C Zhen Shi (601112.SH) has clarified that its main products are clean energy functional materials and other fiber-reinforced materials, which have not yet been applied in the field of hollow core fibers [2] Group 2 - An investor inquired on the investor interaction platform about the company's products' applicability to hollow core fibers [2] - The company responded on February 12, indicating that its products are not currently used in the hollow core fiber sector [2]