REVENUE AND OTHER INCOME (Details) - CNY (¥) ¥ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue
Sale of goods	¥ 182,989	¥ 327,581	¥ 498,189
Other income
Interest income	49	73	36
Foreign exchange gain	124	74	450
Consulting income	7,249	109	0
Rent deposit refund	0	88	0
Other income	223	96	0
Gain on disposal of fixed assets	0	0	0
Rental income	14,286	14,196	14,151
Total Other Income	¥ 21,931	¥ 14,636	¥ 14,637

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The amount of operating income that the entity does not separately disclose in the same statements or note.

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The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Financial instruments, class [member]]

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