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v3.25.1

Summary of significant accounting policies (Tables) | 12 Months Ended
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Dec. 31, 2024
Accounting Policies [Abstract] |
Schedule of estimated useful life of property and equipment | Depreciation on property and equipment is calculated on the straight-line method over the estimated useful lives of the assets as below:
Category |  | Estimated useful life
Machinery and electronic equipment |  | 3 – 10 years
Transportation vehicles |  | 4 years
Office and other equipment |  | 5 years
Leasehold improvements |  | Shorter of the lease term and the estimated useful lives of the assets
Schedule of intangible assets, net | In determining the useful life of an intangible asset, the Group considers the factors such as the expected use of the asset by the Group, and any legal, regulatory, or contractual provisions that may limit the useful life:
Category |  | Estimated useful life
Software |  | 3 years
Distribution and licensing rights |  | 3 - 10 years
Patent |  | 3 years
Trademarks |  | 10 years
Developed technology |  | 10 years
Intangible assets, net consisted of the following:
| As of December 31,
| 2023 |  | 2024
| RMB |  | RMB
Software | 121,950 |  |  | 164,369 |
Distribution and licensing rights | 143,725 |  |  | 185,363 |
Trademark | 139 |  |  | 270 |
Patent | 2,655 |  |  | 2,655 |
Developed technology (refer to Note 3.c) | — |  |  | 138,569 |
Intangible assets | 268,469 |  |  | 491,226 |
Less: accumulated amortization | (86,183) |  |  | (177,871) |
Less: impairment | (2,945) |  |  | (3,578) |
Intangible assets, net | 179,341 |  |  | 309,777 |
Schedule of deferred government grants | As of December 31, 2023 and 2024, deferred government grants are recorded as follow:
| As of December 31,
| 2023 |  | 2024
| RMB |  | RMB
Accrued expenses and other current liabilities | — |  |  | 5,833 |
Other non-current liabilities – third parties | 48,792 |  |  | 98,002 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 + Details
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