The 7th China Helicopter Exposition kicked off on Thursday in Tianjin, north China. The four-day event has attracted nearly 400 enterprises from more than 30 countries and regions.

The event spans 160,000 square meters, including 25,000 square meters of indoor exhibits, 20,000 square meters of outdoor display area and 60,000 square meters for flight demonstrations. A newly added 5,000-square-meter low-altitude economy zone will also debut multiple low-altitude aircraft.