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DISCONTINUED OPERATIONS (Schedule of The Net Assets of Wuhu Feishang) (Details) - CNY (¥) ¥ in Thousands	2 Months Ended	12 Months Ended
	Mar. 03, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015
Net assets disposed of:
Property, plant and equipment			¥ 275	¥ 337
Prepayments			39	39
Other receivables			636	10,494
Cash and cash equivalents		¥ 19,228	6,793	18,878	¥ 45,307
Trade payables			(100)	(215)
Other payables and accrued liabilities			(1,639)	(2,926)
Taxes payable			(16,788)	(16,792)
Due to related companies			(4,041)	(13,747)
Asset retirement obligations				¥ (5,302)
Discontinued operation of Wuhu Feishang [Member]
Net assets disposed of:
Property, plant and equipment	¥ 7,613
Rehabilitation fund	3,983
Inventories	5,644
Prepayments	73
Other receivables	47
Cash and cash equivalents	18
Trade payables	(30)
Other payables and accrued liabilities	(13,303)
Taxes payable	(5,316)
Due to related companies	(5,117)
Asset retirement obligations	(4,952)
Net assets disposed of	(11,340)
Gain on disposal of Wuhu Feishang	12,340
Consideration	1,000
Satisfied by:
Cash received	¥ 1,000

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Non-current portion of the carrying value of the obligation (known or estimated) arising from requirements to perform activities under asset retirement obligations or to remediate one or more sites, payable in twelve months or in the next operating cycle, if longer.

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