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SUMMARY OF PRINCIPAL ACCOUNTING POLICIES - Intangible assets and Land use rights (Details)
12 Months Ended
Dec. 31, 2022
Technical know-how  
Intangible assets  
Amortization period 10 years
Computer software | Minimum  
Intangible assets  
Amortization period 1 year
Computer software | Maximum  
Intangible assets  
Amortization period 10 years
Land use rights  
Intangible assets  
Amortization period 50 years