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START-UP COSTS (Details) - CNY (¥) ¥ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
General and administrative expenses
Start-up costs incurred prior to operating a new data center	¥ 6,809	¥ 9,596

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- Definition

Amount of start-up costs incurred prior to operating a new center.

+ References

No definition available.

+ Details

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- Details

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