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INVENTORIES (Schedule of Inventories) (Details) ¥ in Thousands | Dec. 31, 2017 USD ($) | Dec. 31, 2017 CNY (¥) | Dec. 31, 2016 CNY (¥)
--- | --- | --- | ---
ForeignCurrencyLineItems [Line Items] |  |  |
Materials and supplies | ¥ |  |  | ¥ 8,437
Finished goods | ¥ |  |  | 2,120
Inventories | ¥ |  |  | ¥ 10,557
USD [Member] |  |  |
ForeignCurrencyLineItems [Line Items] |  |  |
Materials and supplies | $ |  |  |
Finished goods | $ |  |  |
Inventories | $ |  |  |

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