21Vianet Group (NASDAQ:VNET) Q1 2019 Results Earnings Conference Call May 16, 2019 8:00 PM ET Company Participants Rene Jiang - IR Alvin Wang - CEO and President Sharon Liu - CFO Conference Call Participants Yang Liu - Morgan Stanley Rex Wu - Jefferies Operator Good morning and good evening ladies and gentlemen. Thank you and welcome to 21Vianet Group's First Quarter 2019 Earnings Conference Call. At this time, all participants are in a listen-only mode. We will be hosting a question-and-answer session afte ...