Which is more imposing and safer, using helicopter aerial photography or using quadcopter to clear the way? Does Wacker have a double-slurry coaxial outdoor variable distance machine?
Actually, it's all the same Who cares if you get married? Helicopters are not as safe as quadcopters. This kind of drone is generally safe. However, it seems that drones generally only take pictures, and cameras seem to be more expensive and risky. As for Walker, I don't know much about him.