The sprayer drones for agriculture in the video is for one Philippines customer.
It is model JT15L-608 Pro, detail information: http://www.joyancetech.com/html/sprayer/products/15L_agriculture_spraying_drone.html

All the sprayer drones for agriculture we sell out are ready-to-fly commercial sprayer drones.
Before despatch, every agriculture sprayer drone is 100% tested and has to pass through a rigorous quality control test to confirm it meets the highest standards in performance and durability.
We manufacture sprayer drones for agriculture at first, and test them(Don`t worry, we test only with water, no pesticide).
The test usually include 4 times: no-load trial flight, semi-load trial flight, full-load trial flight, autonomous flight.
Only the qualified drones are entitled into our storehouse.
When customers confirmed their order, we will add the optional accessories and test them again, to ensure all functions work well.