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Inventories (Tables)
12 Months Ended
Dec. 31, 2022
Inventories  
Schedule of inventories

As of December 31,

    

2021

    

2022

RMB

RMB

Raw material

 

117,845

 

61,406

Work-in-process

 

2,690

 

2,999

Finished goods

 

102,784

 

67,150

Total

 

223,319

 

131,555