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INVENTORIES (Details)
12 Months Ended
Dec. 31, 2023
CNY (¥)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2023
USD ($)
INVENTORIES          
Finished goods ¥ 244,373,815   ¥ 267,036,620    
Works in progress 6,925   69,290    
Raw materials 148,409,401   149,903,238    
Inventories 392,790,141   417,009,148   $ 55,323,334
Write-down of inventories (Note 5) ¥ 21,681,652 $ 3,053,797 ¥ 8,991,793 ¥ 3,679,669