v3.25.1
Lease obligations (Details 2)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Operating lease right-of-use assets $ 101 $ 233    
Current portion of long-term operating lease obligations 83 170    
Long-term operating lease obligations, net of current maturities 9 44    
Total operating lease liabilities $ 92 $ 214    
Weighted average remaining lease term : Operating leases 3 months 3 months    
Weighted average discount rate : operating leases 5.00% 5.45% 5.00% 5.45%
Accumulated depreciation and impairment losses $ (1,092) $ (1,089)    
Property, plant and equipment, net 159 168    
ZHEJIANG TIANLAN        
Accumulated depreciation and impairment losses | ¥     ¥ (74,681) ¥ (68,506)
Property, plant and equipment, net | ¥     ¥ 57,738 63,505
ZHEJIANG TIANLAN | Lease obligations        
Operating lease right-of-use assets 2,529 0    
Current portion of long-term operating lease obligations 563 0    
Long-term operating lease obligations, net of current maturities 1,542      
Total operating lease liabilities $ 2,105 $ 0    
Weighted average remaining lease term : Operating leases 33 months      
Weighted average discount rate : operating leases 3.60%   3.60%  
Accumulated depreciation and impairment losses $ (141)     0
Property, plant and equipment, net $ 2,388     ¥ 0