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Prepayments and other current assets (Details) link:presentationLink link:calculationLink link:definitionLink 99940603 - Disclosure - OTHER RECEIVABLES, PREPAYMENTS AND OTHER CURRENT ASSETS, PREPAYMENTS AND OTHER NON - CURRENT ASSETS - Prepayments and other non-current assets (Details) link:presentationLink link:calculationLink link:definitionLink 99940801 - Disclosure - PROPERTY AND EQUIPMENT, NET (Details) link:presentationLink link:calculationLink link:definitionLink 99940901 - Disclosure - ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 99941102 - Disclosure - LEASES - Balance sheet information related to leases (Details) link:presentationLink link:calculationLink link:definitionLink 99941103 - Disclosure - LEASES - Minimum lease payments in future periods (Details) link:presentationLink link:calculationLink link:definitionLink 99941202 - Disclosure - INCOME TAX - Pretax loss (Details) link:presentationLink link:calculationLink link:definitionLink 99941204 - 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