v3.26.1
Property, plant and equipment, net (Tables)
6 Months Ended
Jun. 30, 2026
Property, Plant and Equipment [Abstract]  
Schedule of Property, plant and equipment, net
                       
    December 31,
2025
    June 30,
2026
    June 30,
2026
 
    RMB     RMB     USD  
    (Audited)     (Unaudited)     (Unaudited)  
Office equipment     1,024,191       1,011,847       148,563  
Mechanical equipment     1,059,178       1,059,178       155,512  
Electronic and other equipment     1,729,181       1,057,713       155,297  
Vehicles     114,182       70,200       10,307  
Subtotal     3,926,732       3,198,938       469,679  
Less: accumulated depreciation     (3,435,165 )     (2,873,804 )     (421,942 )
Total     491,567       325,134       47,737