通光线缆(300265.SZ)：公司尚无空芯光纤产品

Group 1 - The company, Tongguang Cable (300265.SZ), has stated that it currently does not have any hollow core fiber products [1] - The subsidiary established in partnership with Yangtze Optical Fibre and Cable Joint Stock Limited Company focuses on the research, development, production, and sales of optical fibers and cables [1]