Recently, the first test flight of Keel mini, a multi-rotor UAV independently developed by ZHT, was a complete success. At an altitude of 100 meters and carrying a payload of 3KG, the hovering time is up to 40 minutes. The test fully demonstrated the excellent performance and reliability of the product, which was highly praised by visiting customers. The two sides have reached a preliminary agreement on the next step of cooperation, hoping to achieve win-win and common development in the upcoming projects.