Explanation :

SY141HR is an agricultural unmanned hexacopter, designed for precision variable rate application of liquid pesticides, fertilizers and herbicides. Powerful propulsion system enables SY141HR to carry up to 15kg of liquid payloads, combined with the speed means that the area of one hectare (10 000 sq m) can be covered in just 15min.
It support three flight modes: Smart mode, Manual Plus and Manual mode.
Intelligent spraying system automatically adjust its spray according to the flying speed so that an even spray is always applied.
Automatically records its coordinates. When operation is interrupted  for recharging, SY141HR automatically returns to its last working position.  Highly portable with foldable design