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COMMITMENTS (Details 1) - CNY (¥)
¥ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Other property, plant and equipment [member]      
Disclosure of commitments [Line Items]      
Authorised capital commitments but not contracted for ¥ 0 ¥ 0 ¥ 0
Hengda [Member]      
Disclosure of commitments [Line Items]      
Contractual capital commitments ¥ 0 ¥ 0 ¥ 0