(251030) -- SHENZHEN, Oct. 30, 2025 (Xinhua) -- People visit the 20th China International Social and Public Safety Expo in Shenzhen, south China's Guangdong Province, Oct. 28, 2025. The 20th China International Social and Public Safety Expo kicked off here on Tuesday. This four-day expo has attracted 1,100 enterprises from home and abroad, showcasing over 20,000 new technologies and products across an exhibition area of 110,000 square meters. (Xinhua/Wang Feng)