[21Vianet Group, Inc. Awarded Well-Known Trademark Honor BEIJING, July 14, 2014 (GLOBE NEWSWIRE) – 21Vianet Group, Inc. (Nasdaq: VNET) (“21Vianet” or the “Company”), the largest carrier-neutral Internet data center services provider in China, today announced that the Company’s “世纪互联” trademark was awarded the Well-Known Trademark by the Trademark Office of the State Administration for Industry and Commerce of the People’s] [FORM 6-K 21Vianet Group, Inc. M5, 1 Jiuxianqiao East Road, Chaoyang District Beijing 100016 The People’s Republic of China (86 10) 8456 2121 x ¨ Form 20-F ¨ ¨ 21Vianet Group, Inc. Shang-Wen Hsiao Chief Financial Officer 6-K 1 d757943d6k.htm FORM 6-K]