Drone World Congress 2019 le 4th Shenzhen International UAV Expo e butsoe ka Labone Guangdong - profinse e lebōpong la leoatle ka boroa-bochabela ho Chaena, e moeling oa Hong Kong le Macau.
Likhoebo tse fetang 400 tsa Machaena le tsa machabeng li nka karolo pontšong ena.
Li-drones tse fetang 1,000 tse lebelletsoeng ho bonts'oa ketsahalong eo.