(250516) -- WUHAN, May 16, 2025 (Xinhua) -- Visitors view a high-speed photodetector at the 20th Optics Valley of China International Optoelectronic Exposition (OVC Expo), at the China Optics Valley Convention and Exhibition Center in Wuhan, central China's Hubei Province, on May 16, 2025. Starting on Friday for three days with more than 20 conferences and special events scheduled, the OVC Expo is expected to attract nearly 400 exhibitors and over 30,000 professional visitors, including many well-known domestic and foreign companies in the field of optoelectronic industry. The exhibition areas at the expo feature the cutting-edge technologies such as lasers, precision optics, "optics plus robot", etc., aiming to showcase the growth opportunities in the optoelectronic industry. (Xinhua/Du Zixuan)