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Summary of Significant Accounting Policies - Intangible assets and Land use rights (Details)	Dec. 31, 2024
Customer-related intangible assets | Minimum
Intangible assets
Amortization period	7 years
Customer-related intangible assets | Maximum
Intangible assets
Amortization period	20 years
Trademark
Intangible assets
Amortization period	20 years
Technical know-how
Intangible assets
Amortization period	10 years
Computer software | Minimum
Intangible assets
Amortization period	3 years
Computer software | Maximum
Intangible assets
Amortization period	10 years
Land use rights
Intangible assets
Amortization period	50 years

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