Seven. Baoan District belongs to Shenzhen City, located in the west of Shenzhen City, Guangdong Province, and near the Pearl River Estuary in the west. It is the core of Guangdong-Hong Kong-Macao Greater Bay Area, with Longhua District in the east, Nanshan District in the south, Lingdingyang in the west, Guangming District and Dongguan City in the north. There are seven manufacturers of drones. Unmanned aerial vehicle (UAV) is an unmanned aerial vehicle controlled by radio remote control equipment or airborne computer program control system. Unmanned aerial vehicle (UAV) has simple structure and low cost, and can complete the tasks carried out by manned aircraft.