The 2021 edition of the International Signs & LED Exhibition (ISLE) was held from May 10 to 13 at Bao’An New Hall of the Shenzhen World Exhibition and Convention Center. Two other trade shows also took place concurrently under the ISLE, which was the overarching event. These two trade shows were the International Smart Display & Integrated Exhibition and the International Signs & Smart Space Application Exhibition.   At this year’s ISLE, all-in-one system, smart retail displays, immersive displays, and UHD display...