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Inventories (Tables)
12 Months Ended
Dec. 31, 2023
Inventory Disclosure [Abstract]  
Schedule of inventories
Inventories consisted of the following:
As of December 31,
20222023
RMBRMB
Raw materials65,575 90,882 
Work-in-process2,999 11,003 
Finished goods113,998 58,896 
Total182,572 160,781