v3.26.1
Property and Equipment, Net
12 Months Ended
Dec. 31, 2025
Property, Plant and Equipment, Net [Abstract]  
Property and Equipment, Net
8.
Property and Equipment, Net
 
    
As of December 31,
 
    
2024
    
2025
 
    
RMB
    
RMB
    
US$
 
Leasehold improvements
     30,236        86,648        12,391  
Building
     —         84,087        12,024  
Electronic equipment
     15,828        70,302        10,053  
Machinery equipment
     20,440        35,855        5,127  
Construction in progress
     16,985        12,532        1,792  
Mold and tooling
     6,190        11,926        1,705  
Transportation equipment
     4,224        6,766        968  
Office equipment
     1,980        4,432        634  
  
 
 
    
 
 
    
 
 
 
    
95,883
    
312,548
    
44,694
 
Less: accumulated depreciation
     (34,199 )      (53,038 )
 
     (7,584 )
 
Less: accumulated impairment
     (1,460 )
 
     (1,460 )      (209 )
  
 
 
    
 
 
    
 
 
 
    
60,224
    
258,050
    
36,901
 
  
 
 
    
 
 
    
 
 
 
For the years ended December 31, 2023, 2024 and 2025, the Group recorded depreciation expense of RMB12,442, RMB12,774 and RMB18,954 (US$2,710), respectively.
As of December 31, 2025, certain long-term bank loans (Note 12) were secured by mortgages of the Group’s building with carrying values of approximately RMB
 
81,952 (US$11,719). There was no property and equipment mortgage securing the long-term loans outstanding as of December 31, 2024.