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RELATED PARTY TRANSACTIONS (Details) - CNY (¥) ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Related Party Transactions |  |
Amount due to related parties | ¥ 15,360 | ¥ 11,988
STT Singapore DC Pte. Ltd. |  |
Related Party Transactions |  |
Commission income | 553 | 624
Amount due to related parties | 7,938 | 5,350
Billed on behalf of related parties | 40,503 | 55,392
STT DEFU 2 Pte. Ltd. |  |
Related Party Transactions |  |
Commission income | 485 | 332
Amount due to related parties | 7,422 | 6,638
Billed on behalf of related parties | 40,256 | 43,069
Affiliated Entity |  |
Related Party Transactions |  |
Commission income | ¥ 1,038 | ¥ 956

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