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Restricted Net Assets (Details) - USD ($) | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Restricted net assets |  |  |
Minimum required statutory reserve of annual after-tax profit (as a percent) | 10.00% |  |
Required statutory reserve as a percentage of registered capital (as a percent) | 50.00% |  |
Appropriation to statutory reserves | $ 0 | $ 0 | $ 0
PRC |  |  |
Restricted net assets |  |  |
Restricted net assets | $ 1,709,961,000 | $ 2,114,277,000 |

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- Definition Amount appropriated to statutory reserves. + References No definition available. + Details
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- Details
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