A Bombardier Global 7500 business jet is seen at the Asian Business Aviation Conference and Exhibition (ABACE) in Shanghai, China April 16, 2019. China Daily via REUTERS. Image for illustrative purposes.

A man cleans an aircraft near a Jetex booth in preparation for the Asian Business Aviation Conference and Exhibition (ABACE) in Shanghai, China April 15, 2019. Picture taken April 15, 2019. Yin Liqin/CNS via REUTERS Image used for illustrative purpose.

A worker is seen in front of an advertisement for Airbus Corporate Jets (ACJ) and Airbus Corporate Helicopters (ACH) ahead of the Asian Business Aviation Conference and Exhibition (ABACE) in Shanghai, China April 15, 2019. Picture taken April 15, 2019. China Daily via REUTERS

Visitors are seen next to a KODIAK 100 airplane of SkyView Aircraft at the Asian Business Aviation Conference and Exhibition (ABACE) in Shanghai, China April 16, 2019. China Daily via REUTERS