A robot provides directions to a visitor at the event, Oct 18. [Photo/chinadaily.com.cn]

David Spence, an exhibitor from Canada, is attending the expo for the second time. "It's bigger than last year with more companies and more great technologies." 

"I'm most impressed by the technology offered by Tencent that can diagnose various health problems just by scanning the eyes. It's interesting as it enables doctors to diagnose patients even in rural areas or other places where there are no hospital facilities."

Organizers have announced that 117 product launches, as well as 10 industrial cooperation meetings will take place during the event.