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Summary of Significant Accounting Policies (Details) ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 CNY (¥) | Dec. 31, 2021 CNY (¥)
Goodwill [Line Items] |  |  |  |
Equity method investment, impairment | ¥ 0 |  | ¥ 0 | ¥ 0
Extended warranty service expense | 10,413 |  | 7,702 | 676
Accrued warranty liability |  |  |  |
Balance as of the beginning of the year | 17,694 |  | 13,932 | 10,042
Warranty provision | 26,247 |  | 8,467 | 10,766
Consumption | (15,516) |  | (4,705) | (6,876)
Balance as of the end of the year | ¥ 28,425 | $ 4,004,000 | ¥ 17,694 | ¥ 13,932
Minimum |  |  |  |
Goodwill [Line Items] |  |  |  |
Period for extended warranty | 1 year | 1 year |  |
Maximum |  |  |  |
Goodwill [Line Items] |  |  |  |
Period for extended warranty | 2 years | 2 years |  |
Oxigraf Inc. |  |  |  |
Goodwill [Line Items] |  |  |  |
Impairment on goodwill | $ |  | $ 1,982,033 |  |

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