Fiber optic concept stocks rallied collectively, with TDii hitting the limit up, while YOFC, ZTT, and HTGD followed. On the news front, the fiber optic industry has exhibited a prosperous trend of simultaneous growth in product volume and prices since the beginning of this year. A representative from a Jiangsu-based fiber optic production company told reporters recently that first-quarter production and sales volumes for fiber optics increased by nearly five times year-on-year, and product prices also saw a sharp rise. G.657.A2 fiber was priced at 32 yuan per core kilometer last year but reached 240 yuan this year, marking a 650% increase.