v3.25.1
Income taxes (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2024
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
USD ($)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
CNY (¥)
Current taxes (expense): Hong Kong profits tax and the PRC EIT | $ $ (33)   $ (45)   $ 0  
Income tax expense | $ (33)   (45)   0  
Deferred tax credit / (expenses): Hong Kong and the PRC | $ (39)   0   (24)  
Total deferred tax credit / (expense) | $ (39)   0   (24)  
Total credit / (expense) | $ $ (72)   $ (45)   $ (24)  
ZHEJIANG TIANLAN            
Income tax expense/(credit) PRC EIT | ¥   ¥ 3,275   ¥ 7,340   ¥ (7)
Income tax expense | ¥   3,275   7,340   (7)
Deferred tax expense / (credit) | ¥   (2,910)   8,729   (361)
Total deferred tax credit / (expense) | ¥   (2,910)   8,729   (361)
Total credit / (expense) | ¥   ¥ 365   ¥ 16,069   ¥ (368)