Here's how I would write it. In the first one, semicolons will help. Also, if there are names for the "Environmental Health and Healthcare Management Programs", they could be listed in parenthesis after the word "Programs". In the second, I think breaking it into two separate sentences makes it clearer. 1. JU participated in the Business sector, where they presented their three Business Program concentrations (E-management, Retail Management, and Event Management); the Banking and Finance sector, to discuss their fourth Business concentration (Islamic Banking and Finance); and the Medical sector, which featured their Environmental Health and Healthcare Management Programs. 2. At the end of the exhibition, Jumeira University signified its appreciation of all the attendees' excellent accomplishments by handing each of them a symbolic souvenir. They then expressed their hope that the event will help the students in choosing their career paths.