David Yu Browse All Authors Famous Quotes by David Yu It's much harder to provide a great customer service than I would have ever realised. It's much more art than science in some of these other areas and not just about the facts but about how you are conveying them. David Yu educational inspirational art HNA's shareholding structure and how they structure investments has always been very complicated, and the HKA case isn't any different, the issue now is that there is some distress at the parent group, and this is obviously having implications on the underlying companies, including HKA. David Yu business