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Inventories (Tables)
12 Months Ended
Dec. 31, 2025
Inventories  
Schedule of inventories

As of December 31, 

  ​ ​ ​

2024

  ​ ​ ​

2025

 

RMB

 

RMB

Finished goods

 

121,436

274,845

Raw materials

 

21,116

22,837

Inventories

 

142,552

297,682