Information Security Technology Conference & Expo held in Qingdao

People visit a security equipment at the Information Security Technology Conference & Expo held in Qingdao, east China's Shandong Province, on Oct. 31, 2018. The 2018 Information Security Technology Conference & Expo opened here on Wednesday in Qingdao, attracting over 600 research organizations and companies in field of information security. (Xinhua/Li Ziheng)