VNET [21Vianet] 6-K: (Original Filing)
[21Vianet Group, Inc. Reports Unaudited First Quarter 2018 Financial Results Adjusted EBITDA up 95.5% YoY to RMB196.0 million Adjusted EBITDA margin expanded to 24.5% from 11.6% in prior year period BEIJING, May 17, 2018 (GLOBE NEWSWIRE) 21Vianet Group, Inc. (Nasdaq: VNET) (21Vianet or the Compa]