These two units of drone agriculture sprayer in the video is for one Colombia customer.
It is model JT6L-606, one low budget model which is on promotion,
detail specification and detail pictures: http://www.joyancetech.com/html/sprayer/products/5L_agriculture_sprayer_drone.html
detail promotion information: http://www.joyancetech.com/html/news/news/Low_Budget_Low_Risk_to_try_a_sprayer_drone.html
All the drones we sell out are ready-to-fly sprayer drones.
Before despatch, every 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 drones at first, and test them.
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.