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DEPOSITS FOR NON-CURRENT ASSETS (Schedule of Deposits for Non-Current Assets) (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2017
CNY (¥)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
CNY (¥)
Valuation and Qualifying Accounts Disclosure [Line Items]      
Deposits for purchases of property, plant and equipment ¥ 297,040 $ 45,654 ¥ 196,731
Deposit for operating license in BPMC [1] 0 0 102,876
Deposits, gross 297,040 45,654 299,607
Reserve for unrecoverable deposits (30,860) (4,743) (30,860)
Deposits ¥ 266,180 $ 40,911 ¥ 268,747
[1] The amount represented the deposit paid for the operating license in BPMC, which was deconsolidated and became an equity method investee in 2017.