v3.26.1
INVENTORIES (Details)
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2025
USD ($)
INVENTORIES          
Finished goods ¥ 475,807,376   ¥ 471,547,560    
Raw materials 176,772,275   177,630,159    
Inventories 652,579,651   649,177,719   $ 93,317,649
Write-down of inventories ¥ 89,204,469 $ 12,756,069 ¥ 30,028,243 ¥ 21,681,652