Global Multirotor UAV Market By Type (3-Rotor Uav, 4-Rotor Uav, 6-Rotor Uav, and 8-Rotor Uav), By Application (Aerial Photography and Filming, Agriculture, Surveillance, Search and Rescue, Security and Law Enforcement, and Inspection), By Region and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2019-2028