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PROPERTY, PLANT AND EQUIPMENT (Details) - CNY (¥)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of detailed information about property, plant and equipment [line items]      
Impairment losses recognized in profit or loss ¥ 0 ¥ 75,907,000 ¥ 33,653,000
Carrying amount      
Property, plant and equipment 35,000 46,000  
Cost [Member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 1,101,783,000 1,101,783,000  
Additions 0 0  
Disposals 0 0  
Balance 1,101,783,000 1,101,783,000 1,101,783,000
Accumulated depreciation      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 403,963,000 392,600,000  
Depreciation charge 11,000 11,363,000  
Balance 403,974,000 403,963,000 392,600,000
Impairment for the year      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 697,774,000 621,867,000  
Impairment losses recognized in profit or loss 0 75,907,000  
Balance 697,774,000 697,774,000 621,867,000
Buildings [Member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Impairment losses recognized in profit or loss 1,687,000 1,687,000  
Carrying amount      
Property, plant and equipment 0 0  
Buildings [Member] | Cost [Member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 349,630,000 349,630,000  
Additions 0 0  
Disposals 0 0  
Balance 349,630,000 349,630,000 349,630,000
Buildings [Member] | Accumulated depreciation      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 49,297,000 48,034,000  
Depreciation charge 0 1,263,000  
Balance 49,297,000 49,297,000 48,034,000
Buildings [Member] | Impairment for the year      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 300,333,000 260,068,000  
Impairment losses recognized in profit or loss 0 40,265,000  
Balance 300,333,000 300,333,000 260,068,000
Plant And Machinery [Member]      
Carrying amount      
Property, plant and equipment 0 0  
Plant And Machinery [Member] | Cost [Member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 746,042,000 746,042,000  
Additions 0 0  
Disposals 0 0  
Balance 746,042,000 746,042,000 746,042,000
Plant And Machinery [Member] | Accumulated depreciation      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 349,382,000 339,328,000  
Depreciation charge 0 10,054,000  
Balance 349,382,000 349,382,000 339,328,000
Plant And Machinery [Member] | Impairment for the year      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 396,660,000 361,062,000  
Impairment losses recognized in profit or loss 0 35,598,000  
Balance 396,660,000 396,660,000 361,062,000
Motor vehicles      
Carrying amount      
Property, plant and equipment 0 0  
Motor vehicles | Cost [Member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 4,225,000 4,225,000  
Additions 0 0  
Disposals 0 0  
Balance 4,225,000 4,225,000 4,225,000
Motor vehicles | Accumulated depreciation      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 3,748,000 3,720,000  
Depreciation charge 0 28,000  
Balance 3,748,000 3,748,000 3,720,000
Motor vehicles | Impairment for the year      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 477,000 446,000  
Impairment losses recognized in profit or loss 0 31,000  
Balance 477,000 477,000 446,000
Office equipment      
Carrying amount      
Property, plant and equipment 35,000 46,000  
Office equipment | Cost [Member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 1,886,000 1,886,000  
Additions 0 0  
Disposals 0 0  
Balance 1,886,000 1,886,000 1,886,000
Office equipment | Accumulated depreciation      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 1,536,000 1,518,000  
Depreciation charge 11,000 18,000  
Balance 1,547,000 1,536,000 1,518,000
Office equipment | Impairment for the year      
Disclosure of detailed information about property, plant and equipment [line items]      
Balance 304,000 291,000  
Impairment losses recognized in profit or loss 0 13,000  
Balance ¥ 304,000 ¥ 304,000 ¥ 291,000