v3.26.1
Property, Plant and Equipment, Net
 12 Months Ended
Dec. 31, 2025
Property, Plant and Equipment, Net [Abstract]  
Property, plant and equipment, net
8. Property, plant and equipment, net

 

Property, plant and equipment, net consist of the following:

 

   As of December 31, 
   2024   2025 
   RMB   RMB 
Machinery and electronic equipment   17,409,218    14,766,562 
Office furniture   370,667    372,966 
Leasehold improvement   2,794,450    2,794,450 
Transportation equipment   41,014    41,014 
Buildings and facilities attached to buildings   194,892,201    191,856,403 
Less: Accumulated depreciation   (18,165,635)   (27,200,724)
Property, plant and equipment, net   197,341,915    182,630,671 

 

Depreciation expenses recognized for the years ended December 31, 2023, 2024 and 2025 were RMB3,436,716, RMB8,669,931 and RMB9,975,895, respectively.

 

As of December 31, 2024 and 2025, property, plant and equipment with net book value of 188,432,414 and RMB176,739,153 was pledged as collateral under a loan arrangement, respectively (also see Note 12).