v3.25.2
Leases (Details)
¥ in Thousands, $ in Thousands
1 Months Ended
Dec. 31, 2019
USD ($)
Dec. 31, 2019
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2024
CNY (¥)
Jan. 31, 2024
USD ($)
Jan. 31, 2024
CNY (¥)
Dec. 31, 2023
USD ($)
Dec. 31, 2023
CNY (¥)
Leases [Line Items]                
Gross value of land use right $ 2,528 ¥ 16,494            
Acquired from taizhou resource term 50 years 50 years            
Net carrying values land use rights     $ 2,034 ¥ 14,845     $ 2,137 ¥ 15,175
Land use Right         $ 2,034 ¥ 14,845    
Operating leases remaining lease terms     45 years 45 years        
Minimum [Member]                
Leases [Line Items]                
Operating leases remaining lease terms     11 months 1 day 11 months 1 day        
Maximum [Member]                
Leases [Line Items]                
Operating leases remaining lease terms     1 year 5 months 1 day 1 year 5 months 1 day