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Cash and Bank Balances - Additional Information (Detail)
¥ in Millions, $ in Millions
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
CNY (¥)
Disclosure of detailed cash and cash equivalents short term bank deposits current restricted cash and long term bank deposits [line items]      
Restricted cash used as collateral by the banks for the issuance of bills to suppliers ¥ 93.4 $ 13.0 ¥ 23.0
Restricted cash used as pledge to secure bank facilities 8.6 1.2 0.0
Undrawn borrowing facilities 542.5 75.6 534.5
Fixed deposits held with related party 51.1 7.1 51.2
Suzhou reman [member]      
Disclosure of detailed cash and cash equivalents short term bank deposits current restricted cash and long term bank deposits [line items]      
Retention money deposited in joint signatory account with acquirer ¥ 18.4 $ 2.6 ¥ 5.0