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REVENUE AND OTHER INCOME (Details) - CNY (¥)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Revenue      
Sale of goods ¥ 327,581,000 ¥ 498,189,000 ¥ 821,792,000
Other income      
Interest income 73,000 36,000 32,000
Foreign exchange gain 74,000 450,000 0
Consulting income 109,000 0 0
Rent deposit refund 88,000 0 0
Other income 96,000 0 0
Gain on disposal of fixed assets 0 0 70,000
Rental income 14,196,000 14,151,000 14,151,000
Total Other Income ¥ 14,636,000 ¥ 14,637,000 ¥ 14,253,000