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Related Party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2017
Related Party Transactions |
|  | Other than disclosed elsewhere, the Company had the following significant related party transactions for the years ended December 31, 2015, 2016 and 2017:
|  | For the years ended December 31, |
|  | 2015 |  |  | 2016 |  |  | 2017 |
|  | RMB |  |  | RMB |  |  | RMB |  |  | US$ |
Services provided to: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- Xiaomi Communication |  |  | 27,144 |  |  |  | 113,458 |  |  |  | 214,555 |  |  |  | 32,976 |
- WiFire BJ |  |  | — |  |  |  | — |  |  |  | 9,726 |  |  |  | 1,495 |
- BJ Kingsoft |  |  | 7,969 |  |  |  | 19,471 |  |  |  | 8,046 |  |  |  | 1,237 |
- BJ Xiaomi |  |  | 275 |  |  |  | 11,689 |  |  |  | 5,555 |  |  |  | 854 |
- BJ Cheetah |  |  | 6,712 |  |  |  | 9,478 |  |  |  | 5,128 |  |  |  | 788 |
- Others |  |  | 4,255 |  |  |  | 2,413 |  |  |  | 3,314 |  |  |  | 509 |
Services provided by: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- BJ Kingsoft |  |  | — |  |  |  | 1,045 |  |  |  | 7,775 |  |  |  | 1,195 |
- DCSS |  |  | — |  |  |  | 10,883 |  |  |  | 6,424 |  |  |  | 987 |
- CYSD |  |  | — |  |  |  | — |  |  |  | 2,979 |  |  |  | 458 |
- WiFire BJ |  |  | — |  |  |  | — |  |  |  | 1,616 |  |  |  | 248 |
- Others |  |  | 20,023 |  |  |  | 9,178 |  |  |  | 2,632 |  |  |  | 405 |
Sales of equipment and property to: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- BJ Fastweb |  |  | — |  |  |  | — |  |  |  | 1,021 |  |  |  | 157 |
Purchases of equipment and property from: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- WNT Technology |  |  | — |  |  |  | — |  |  |  | 2,629 |  |  |  | 404 |
- DIC |  |  | — |  |  |  | 3,079 |  |  |  | 1,234 |  |  |  | 190 |
- CD Xingpu |  |  | 37,101 |  |  |  | — |  |  |  | — |  |  |  | — |
Loan to: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- BJ Fastweb |  |  | — |  |  |  | — |  |  |  | 20,000 |  |  |  | 3,074 |
Loan from: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- CD Guotao |  |  | — |  |  |  | 3,483 |  |  |  | — |  |  |  | — |
Interest income from loan to: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- BJ Fastweb |  |  | — |  |  |  | — |  |  |  | 210 |  |  |  | 32 |
Management service provided by: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
- DCS |  |  | 16,602 |  |  |  | — |  |  |  | — |  |  |  | — |
Related Party Balances |
|  | The Company had the following related party balances as of December 31, 2016 and 2017:
|  | December 31, |
|  | 2016 |  |  | 2017 |
|  | RMB |  |  | RMB |  |  | US$ |
Amounts due from related parties: |  |  |  |  |  |  |  |  |  |  |  |
Current: |  |  |  |  |  |  |  |  |  |  |  |
- Xiaomi Communication |  |  | 22,473 |  |  |  | 39,016 |  |  |  | 5,996 |
- Seller of iJoy |  |  | 27,748 |  |  |  | 26,137 |  |  |  | 4,017 |
- WiFire BJ |  |  | — |  |  |  | 15,321 |  |  |  | 2,355 |
- SH Fawei |  |  | — |  |  |  | 10,332 |  |  |  | 1,588 |
- SH Shibei |  |  | 9,800 |  |  |  | 9,800 |  |  |  | 1,506 |
- BJ Kingsoft |  |  | 3,864 |  |  |  | 5,663 |  |  |  | 870 |
- WH Fastweb |  |  | — |  |  |  | 4,600 |  |  |  | 707 |
- Seller of Aipu Group |  |  | 98,500 |  |  |  | — |  |  |  | — |
- CD Xingpu |  |  | 12,466 |  |  |  | — |  |  |  | — |
- Others |  |  | 7,764 |  |  |  | 3,387 |  |  |  | 522 |
|  |  | 182,615 |  |  |  | 114,256 |  |  |  | 17,561 |
Non-current: |  |  |  |  |  |  |  |  |  |  |  |
- BJ Fastweb |  |  | — |  |  |  | 20,210 |  |  |  | 3,106 |
Amounts due to related parties: |  |  |  |  |  |  |  |  |  |  |  |
Current: |  |  |  |  |  |  |  |  |  |  |  |
- Seller of iJoy |  |  | 38,131 |  |  |  | 39,068 |  |  |  | 6,005 |
- Bozhi Ruihai |  |  | — |  |  |  | 9,358 |  |  |  | 1,438 |
- CYSD |  |  | — |  |  |  | 3,618 |  |  |  | 556 |
- BJ Kingsoft |  |  | 1,105 |  |  |  | 2,070 |  |  |  | 318 |
- Seller of Managed Network Entities* |  |  | 47,755 |  |  |  | — |  |  |  | — |
- Seller of Aipu Group |  |  | 30,000 |  |  |  | — |  |  |  | — |
- CD Guotao |  |  | 3,483 |  |  |  | — |  |  |  | — |
- Others |  |  | 1,454 |  |  |  | 1,561 |  |  |  | 240 |
|  |  | 121,928 |  |  |  | 55,675 |  |  |  | 8,557 |
| * | After the disposal of WiFire Entities, Seller of Managed Network Entities was not determined as a related party of the Company, the amount due to Seller of Managed Network Entities was reclassified into accrued expenses and other payables as of December 31, 2017.
Parent Company |
Related Party Transactions | The Company had the following related party balances as of December 31, 2016 and 2017:
|  | December 31, |
|  | 2016 |  |  | 2017 |
|  | RMB |  |  | RMB |  |  | US$ |
Amount due from subsidiaries |  |  |  |  |  |  |  |  |  |  |  |
- 21Vianet HK |  |  | 3,037,249 |  |  |  | 4,143,269 |  |  |  | 636,809 |
- HongKong Fastweb Holdings Co., Ltd. |  |  | 60,574 |  |  |  | 61,637 |  |  |  | 9,473 |
- 21V Mobile |  |  | 72,361 |  |  |  | 50,453 |  |  |  | 7,754 |
- Ventures |  |  | 27,124 |  |  |  | 25,549 |  |  |  | 3,927 |
- WiFire Open Network Group Ltd. |  |  | — |  |  |  | 4,170 |  |  |  | 641 |
- WiFire Group Inc. |  |  | 4,301 |  |  |  | 653 |  |  |  | 100 |
- Xi’an Holding |  |  | 7,011 |  |  |  | — |  |  |  | — |
- Others |  |  | — |  |  |  | 12 |  |  |  | 3 |
|  |  | 3,208,620 |  |  |  | 4,285,743 |  |  |  | 658,707 |
Amount due from related parties |  |  |  |  |  |  |  |  |  |  |  |
Current: |  |  |  |  |  |  |  |  |  |  |  |
- Seller of iJoy |  |  | 27,748 |  |  |  | 26,137 |  |  |  | 4,017 |
- Seller of Aipu Group |  |  | 70,000 |  |  |  | — |  |  |  | — |
|  |  | 97,748 |  |  |  | 26,137 |  |  |  | 4,017 |
Amount due to subsidiaries |  |  |  |  |  |  |  |  |  |  |  |
- 21Vianet Beijing |  |  | 9,713 |  |  |  | 17,595 |  |  |  | 2,704 |
- Others |  |  | 19 |  |  |  | 18 |  |  |  | 3 |
|  |  | 9,732 |  |  |  | 17,613 |  |  |  | 2,707 |
|  | December 31, |
|  | 2016 |  |  | 2017 |
|  | RMB |  |  | RMB |  |  | US$ |
Amount due to related parties |  |  |  |  |  |  |  |  |  |  |  |
Current: |  |  |  |  |  |  |  |  |  |  |  |
- Seller of iJoy |  |  | 38,131 |  |  |  | 39,068 |  |  |  | 6,005 |
- Seller of Aipu Group |  |  | 30,000 |  |  |  | — |  |  |  | — |
|  |  | 68,131 |  |  |  | 39,068 |  |  |  | 6,005 |

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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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- Definition Tabular disclosure of related party balances, including due from and due to related parties. + References No definition available. + Details
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