VNET [21Vianet] 6-K: 21VIANET GROUP, INC. Incorporated as a limited liability
[21VIANET GROUP, INC. Incorporated as a limited liability company under the laws of the Cayman Islands) ( Announcement of (i) Offer in respect of the outstanding US$300,000,000 7.000% Senior Notes due 2020 (the 2020 Notes, ISIN: XS1640517907: Common Code: 164051790) and (ii) Concurrent New Money Is]