振石股份：产品尚未应用于空芯光纤领域
Group 1 - The core product of the company is clean energy functional materials and other fiber-reinforced materials [1] - The company's products have not yet been applied in the field of hollow core optical fibers [1]
Group 1 - The core product of the company is clean energy functional materials and other fiber-reinforced materials [1] - The company's products have not yet been applied in the field of hollow core optical fibers [1]