What about Yiwu UAV?

There are many kinds of UAVs: fixed wing, rotary wing and special equipment (such as multi-rotor and flexible wing). According to the load, under 5 kg is a small drone; 5- 10 kg is a medium-sized drone; 10-50 kg is a large drone; There is no grade for those weighing more than 50 kilograms, and few domestic companies can make them. There are fewer private enterprises. Generally, there are about 300,000-700,000 small unmanned aerial vehicles, medium-sized aircraft100-1400,000, and large aircraft100,000. A model airplane is not a drone.