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INTANGIBLE ASSETS, NET (Narrative) (Details) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
INTANGIBLE ASSETS, NET [Line Items]      
Impairment loss   ¥ 2,655  
Amortization expenses for intangible assets of continuing operations ¥ 4,651 4,782 ¥ 6,786
Amortization expenses for intangible assets of continuing operations included in cost of sales ¥ 1,393 ¥ 1,393 2,466
Trade name [Member]      
INTANGIBLE ASSETS, NET [Line Items]      
Impairment loss     ¥ 2,655