Advantages:
1.) Solar power plus more power for flight
2.) High quality controller system, stable flying and operation
3.) Ground base
4.)  Double GPS
5.)Obstacle avoidance
6.)computer programing device
7.)professional motors, much payload, up to 10KG, water proof
8.) Wheelbase is big, the spraying scope is big, high efficiency           
9.)design and tech patents for good sales
10.)  phography and crop drones, dual usage 
11.)  CE Rohs