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v3.23.1

Concentration of Risks (Tables) | 12 Months Ended
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Dec. 31, 2022
Customer Concentration Risk [Member] |
Concentration Risk [Line Items] |
Summary of External Customers with 10% or More of Group's Revenues | External customers with 10% or more of the Group’s revenues are:
|  | For the year ended December 31, |
|  | 2020 |  |  | 2021 |  |  | 2022 |
|  | RMB |  |  | RMB |  |  | RMB |  |  | US$ |
Customer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
A |  |  | 22,655 |  |  |  | * |  |  |  | * |  |  |  | * |
B |  |  | 92,331 |  |  |  | * |  |  |  | * |  |  |  | * |
C |  |  | 24,071 |  |  |  | 7,080 |  |  |  | * |  |  |  | * |
D |  |  | * |  |  |  | 19,646 |  |  |  | * |  |  |  | * |
E |  |  | * |  |  |  | * |  |  |  | 9,217 |  |  |  | 1,336 |
F |  |  | * |  |  |  | * |  |  |  | 5,611 |  |  |  | 814 |
G |  |  | * |  |  |  | * |  |  |  | 4,630 |  |  |  | 671 |
Supplier Concentration Risk [Member] |
Concentration Risk [Line Items] |
Summary of External Customers with 10% or More of Group's Revenues | Suppliers accounting for 10% or more of total purchases of materials were:
|  | As of December 31, |
|  | 2021 |  |  | 2022 |
|  | RMB |  |  | RMB |  |  | US$ |
Supplier |  |  |  |  |  |  |  |  |  |  |  |
A |  |  | 7,807 |  |  |  | 3,056 |  |  |  | 443 |
B |  |  | 8,405 |  |  |  | * |  |  |  | * |
C |  |  | 7,596 |  |  |  | * |  |  |  | * |

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