VNET [21Vianet] 6-K: 20-F 21Vianet Group, Inc. Filed Its Annual Report
[20-F 21Vianet Group, Inc. Filed Its Annual Report on Form March 27, 2019 20-F http://ir.21vianet.com/. BEIJING, March 28, 2019 (GLOBE NEWSWIRE) 21Vianet Group, Inc. (Nasdaq:VNET) (21Vianet or the Company), a leading carrier- and cloud-neutral Internet data center services provider in China, to]