 BEIJING, May 14, 2021 GLOBE NEWSWIRE -- 21Vianet Group, Inc. Nasdaq: VNET 21Vianet or the Company, a leading carrier- and cloud-neutral Internet data center services provider in China, today announced that it plans to release its first quarter 2021 financial results on Tuesday, May 25, 2021, after the market closes. The Company will hold a conference call at 8:00 P.M. on Tuesday, May 25, 2021, U.S. Eastern Time, or 8:00 A.M. on Wednesday, May 26, 2021, Beijing Time, to discuss the financial results. 