Zheng Quan Shi Bao Wang·2025-08-13 08:32Group 1 - The optical fiber concept sector increased by 2.55%, ranking 7th among concept sectors, with 55 stocks rising, including Guangku Technology and Robotech, which hit a 20% limit up [1] - Notable gainers in the optical fiber sector included Sanhuan Group, Yonggui Electric, and Tianfu Communication, which rose by 15.51%, 14.14%, and 9.69% respectively [1] - The sector saw a net inflow of 2.258 billion yuan from main funds, with 37 stocks receiving net inflows, and 11 stocks exceeding 100 million yuan in net inflows [2] Group 2 - Tianfu Communication led the net inflow with 615 million yuan, followed by Robotech, Taicheng Light, and Dazhu Laser with net inflows of 435 million yuan, 271 million yuan, and 255 million yuan respectively [2] - The top three stocks by net inflow ratio were Kexin Technology, Te Fa Information, and Tianfu Communication, with ratios of 13.88%, 12.26%, and 10.88% respectively [3] - The optical fiber concept sector's performance was supported by significant trading volumes, with notable turnover rates for stocks like Robotech and Taicheng Light [3]