Public security expo staged in Shenyang

An exhibitor's representative briefs visitors on the intricacies of new surveillance cameras during the 21th Northeast China International Public Security Products Expo, which was held together with the Liaoning Fire Fighting Products and Emergency Rescue Exhibition in Shenyang, Liaoning province, on April 18. The event, which ran to April 20, showcased the latest products and technologies in areas such as smart city construction, big data, cloud computing, fire-fighting, and emergency rescues. [Photo/IC]

Fire-fighting equipment goes on display at the expo in Shenyang, Liaoning province, on April 18. [Photo/IC]

Drones used for police surveillance take pride of place at the Shenyang expo. [Photo/IC]